Two functions are shown in the table below:
Complete the table, then select the value that is a solution to f(x) = g(x).
Function x = 1 x = 2 x = 3 x = 4 x = 5 x = 6
f(x) = −x2 + 4x + 12
g(x) = x + 8

Answers

Answer 1

The value that is a solution to f(x) = g(x) is x = 4.

What is a function?

Each element of X receives exactly one element of Y when a function from one set to the other is used. The sets X and Y are collectively referred to as the function's domain and codomain, respectively. Initially, functions represented the idealized relationship between two changing quantities.

Here, we have

Given: f(x) = −x² + 4x + 12

g(x) = x + 8,  x = 1 x = 2 x = 3 x = 4 x = 5 x = 6

We have to find the value that is a solution to f(x) = g(x).

When x = 1

f(1) = −(1)² + 4(1) + 12

f(1) = -1 + 4 + 12

f(1) = 15

g(1) =  1 + 8

g(1) = 9

f(1) ≠ g(1)

When x = 2

f(2) = −(2)² + 4(2) + 12

f(2) = -4 + 8 + 12

f(2) = 16

g(2) = 2 + 8

g(2) = 10

f(2) ≠ g(2)

When x =3

f(3) = −(3)² + 4(3) + 12

f(3) = -9 + 12 + 12

f(3) = 15

g(3) = 3 + 8

g(3) = 11

f(3) ≠ g(3)

When x = 4

f(4) = −(4)² + 4(4) + 12

f(4) = -16 + 16 + 12

f(4) = 12

g(4) = 4 + 8

g(4) = 12

f(4) = g(4)

When x = 5

f(5) = −(5)² + 4(5) + 12

f(5) = -25 + 20 + 12

f(5) = -5 + 12

f(5) = 7

g(5) = 5 + 8

g(5) = 13

f(5) ≠ g(5)

When x = 6

f(6) = −(6)² + 4(6) + 12

f(6) = -36 + 24 + 12

f(6) = 0

g(6) = 6 + 8

g(6) = 14

f(6) ≠ g(6)

Hence, the value that is a solution to f(x) = g(x) is x = 4.

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Related Questions

Evaluate the following expressions. Your answer must be an exact angle in radians and in the interval pi/6 [0, pi]. Example: Enter pi/6 for pi/6. cos^-1 (-Squareroot 3/2) cos^-1 (0) cos^-1 (Squareroot 2/2)

Answers

The exact angles in radians and in the interval π/6 [0, π] are:

[tex]cos^{-1}[/tex](-√(3)/2) = 7π/6

[tex]cos^{-1}[/tex](0) = π/2

[tex]cos^{-1}[/tex](√(2)/2) = π/4

What is the cosine inverse function?

The cosine inverse function, also known as the arccosine function, is the inverse function of the cosine function. It takes a value between -1 and 1 and returns the corresponding angle between 0 and π (or 0 and 180 degrees) whose cosine is that value. The notation for the cosine inverse function is cos⁻¹ or arccos.

For example, cos⁻¹(1/2) = π/3, since the cosine of π/3 is 1/2.

According to the given information

[tex]cos^{-1}[/tex](-√(3)/2) is in the second quadrant where cosine is negative. Using the unit circle, we can see that this angle is π/6 + pi = 7π/6.

[tex]cos^{-1}[/tex](0) is in the first and second quadrants where cosine is 0. This means the possible angles are π/2 and 3π/2. However, since we are only considering angles in the interval pi/6 [0, pi], the answer is π/2.

[tex]cos^{-1}[/tex](√(2)/2) is in the first quadrant where cosine is positive. Using the unit circle, we can see that this angle is π/4.

Therefore, the exact angles in radians and in the interval π/6 [0, pi] are:

[tex]cos^{-1}[/tex](-√(3)/2) = 7π/6

[tex]cos^{-1}[/tex](0) = π/2

[tex]cos^{-1}[/tex](√(2)/2) = π/4

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The exact angles in radians and in the interval π/6 [0, π] are:

[tex]cos^{-1}[/tex](-√(3)/2) = 7π/6

[tex]cos^{-1}[/tex](0) = π/2

[tex]cos^{-1}[/tex](√(2)/2) = π/4

What is the cosine inverse function?

The cosine inverse function, also known as the arccosine function, is the inverse function of the cosine function. It takes a value between -1 and 1 and returns the corresponding angle between 0 and π (or 0 and 180 degrees) whose cosine is that value. The notation for the cosine inverse function is cos⁻¹ or arccos.

For example, cos⁻¹(1/2) = π/3, since the cosine of π/3 is 1/2.

According to the given information

[tex]cos^{-1}[/tex](-√(3)/2) is in the second quadrant where cosine is negative. Using the unit circle, we can see that this angle is π/6 + pi = 7π/6.

[tex]cos^{-1}[/tex](0) is in the first and second quadrants where cosine is 0. This means the possible angles are π/2 and 3π/2. However, since we are only considering angles in the interval pi/6 [0, pi], the answer is π/2.

[tex]cos^{-1}[/tex](√(2)/2) is in the first quadrant where cosine is positive. Using the unit circle, we can see that this angle is π/4.

Therefore, the exact angles in radians and in the interval π/6 [0, pi] are:

[tex]cos^{-1}[/tex](-√(3)/2) = 7π/6

[tex]cos^{-1}[/tex](0) = π/2

[tex]cos^{-1}[/tex](√(2)/2) = π/4

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What is an equation of the line that passes through the points (-4, 8) and (6,3)?

Answers

Answer:-42

Step-by-step explanation:

I’m the figure the equation of the line is given if you want the y=mx+b
Let us use (-4,8)
8=1/2*-4+b
8=-2+b
b=8+2
b=10

Your classroom has an area of 72 square feet wide. What is the perimeter of your classroom

Answers

The calculated perimeter of the classroom is approximately 34 feet.

Calculating the perimeter of your classroom

The area of the square classroom is given as 72 square feet.

Let's find the length of one side of the square by taking the square root of 72:

√(72) ≈ 8.5

So each side of the square is approximately 8.5 feet long.

The perimeter of the square is the sum of the lengths of all four sides:

Perimeter = 4 x Length of one side

Perimeter = 4 x 8.5 feet

Perimeter = 34 feet

Therefore, the perimeter of the classroom is approximately 34 feet.

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suppose a is 3x3 and det(a) = 1. what is det(2a)?

Answers

The value of det(2A) = 8 from the given data, and value of det(A).

Suppose a is a 3x3 matrix and det(a) = 1. To find det(2a), we can use the property that det(kA) = k^n * det(A), where k is a constant and A is an n x n matrix. In this case, k = 2 and n = 3. Therefore, det(2a) = 2^3 * det(a) = 8 * 1 = 8. So, det(2a) is equal to 8.


Hi! I'm happy to help you with your question. Suppose matrix A is a 3x3 matrix and det(A) = 1. We want to find the determinant of matrix 2A.

Step 1: Multiply the matrix A by 2. This means that each element of matrix A is multiplied by 2, resulting in the matrix 2A.

Step 2: Compute the determinant of the new matrix, det(2A). Since A is a 3x3 matrix, when you multiply it by a scalar (in this case, 2), the determinant will be affected by the scalar raised to the power of the matrix size (3). So, det(2A) = 2^3 * det(A).

Step 3: Substitute the given value of det(A) = 1 into the equation. So, det(2A) = 2^3 * 1.

Step 4: Calculate the result: det(2A) = 8 * 1 = 8.

Therefore, det(2A) = 8.

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Nicole writes the expression (2.5x -7)( 3). She rewrites the expression using the distributive property. Which expression could Nicole have written using the distributive property? A. 7.5x - 4 C. 7.5x - 21 B. 5.5x - 4 D. 5.5x + 10

Answers

Answer:

C. 7.5x - 21

Step-by-step explanation:

We can distribute the 3 to both the 2.5x and the -7

(3 * 2.5x) + (3 * -7)

7.5x - 21

find the linearization of f(x) at x0. how is it related to the individual linearizations of and at x0?

Answers

The individual linearizations of f(x) and f'(x) at x0 are combined to obtain the linearization of f(x) at x0.

How to find the linearization of a function f(x) at a point x0?

To find the linearization of a function f(x) at a point x0, we use the following formula:

L(x) = f(x0) + f'(x0)(x - x0)

where f'(x0) represents the derivative of f(x) evaluated at x0.

The linearization of f(x) at x0 is an approximation of the function near x0, where the approximation is a linear function. It is related to the individual linearizations of f(x) and f'(x) at x0 in the following way:

The linearization of f(x) at x0 is a linear function that approximates f(x) near x0. It can be seen as the "best" linear approximation of f(x) near x0.

The linearization of f'(x) at x0 is a constant value that represents the slope of the tangent line to f(x) at x0. This constant value is also known as the instantaneous rate of change of f(x) at x0.

The linearization of f(x) at x0 can be obtained by combining the constant value f(x0) and the linear function f'(x0)(x - x0). The linear function represents the change in f(x) as x moves away from x0, while the constant value f(x0) represents the value of f(x) at x0.

Therefore, the individual linearizations of f(x) and f'(x) at x0 are combined to obtain the linearization of f(x) at x0.

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The median is ...
A) the middle number in a numerical data set when the values have been arranged in
numerical order.
B) the number or numbers occurring most frequently in a data set.
C) a measure of dispersion.
D) The difference of the highest value and lowest value in the data set.

Answers

Answer:

A) the middle number in a numerical data set when the values have been arranged in numerical order.

Each student in Mrs. Wimberly’s six science classes planted a bean in a Styrofoam cup. All beans came from the same source, were planted using the same bag of soil, and were watered the same amount. Mrs. Wimberly has 24 students in each of her six classes. In first period, 21 of the 24 bean seeds sprouted.





Which statement about the seeds in the remaining five classes is NOT supported by this information?
Responses
A 87.5% of the bean seeds should sprout.87.5% of the bean seeds should sprout.
B More than 100 bean seeds should sprout.More than 100 bean seeds should sprout.
C 1 out of 8 bean seeds will not sprout.1 out of 8 bean seeds will not sprout.
D At least 20 bean seeds will not sprout.At least 20 bean seeds will not sprout.

Answers

With the help of percentage, 87.5% of the bean seeds should sprout.87.5% of the bean seeds should sprout.

What is percentage?

Percentage is a way of expressing a number as a fraction of 100. It is often used to represent a portion or a rate of change.

According to given information:

The given information states that 21 out of 24 bean seeds sprouted in the first period. This means that 87.5% (or 21/24) of the seeds sprouted in that period. Therefore, statement A is supported by the information given.

Statement B suggests that more than 100 bean seeds should sprout, but this is not necessarily true based on the information provided. The total number of seeds planted is not given, so we cannot determine whether more than 100 seeds should sprout. Therefore, statement B is not supported by the information given.

Statement C suggests that 1 out of 8 bean seeds will not sprout. However, this statement is not necessarily true based on the information given. It is possible that more or fewer than 1 out of 8 bean seeds did not sprout. Therefore, statement C is not supported by the information given.

Statement D suggests that at least 20 bean seeds will not sprout. This statement is not necessarily true based on the information given. It is possible that fewer than 20 bean seeds did not sprout. Therefore, statement D is not supported by the information given.

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if g(x)=t(x)/e^3x, find and simplify g′(x)

Answers

If g(x)=t(x)/e^3x, then the simplified form of g'(x) = (t'(x) - 3t(x)) / e^3x

The quotient rule is a formula used to find the derivative of a function that is expressed as a quotient of two functions. The quotient rule is a useful tool in calculus for finding the derivative of a wide range of functions.

To find the derivative of g(x), we can use the quotient rule

g'(x) = [(e^3x)(t'(x)) - (t(x))(3e^3x)] / (e^3x)^2

where t'(x) represents the derivative of t(x) with respect to x.

We can simplify this expression by factoring out e^3x from the numerator

g'(x) = [e^3x(t'(x) - 3t(x))] / e^6x

Now we can cancel out the e^3x terms

g'(x) = (t'(x) - 3t(x)) / e^3x

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an alpha level of α =.01 means what:
a. that the values of the data must fall out of the 1% critical range of the curve in order to be significant
b. that 1% of the data are not significantly different than the rest of the data
c. that more than 1% of the values are significantly different from the rest of the data
d. that the values of the data must fall within the 1% critical range of the curve in order to be significant

Answers

The correct answer is option D: that the values of the data must fall within the 1% critical range of the curve in order to be significant.

An alpha level of α = .01 sets the threshold for statistical significance at the 1% level, meaning that the values of the data must fall within the critical range of the curve (which represents the distribution of the data) that includes the central 99% of the values in order to be deemed statistically significant.

An alpha level of α = .01 is a statistical significance level that is commonly used in research. It represents the probability of obtaining a result as extreme or more extreme than the observed result, assuming the null hypothesis is true. A significance level of α = .01 means that the researcher has set the critical value at 0.01 or 1%.

Therefore, for a statistical test to be considered significant, the p-value must be less than 0.01. In other words, the values of the data must fall within the 1% critical range of the curve in order to be significant.

It is important to set a significance level before conducting a statistical test as it helps to determine the level of confidence in the results obtained from the test.

The correct answer is option D: that the values of the data must fall within the 1% critical range of the curve in order to be significant

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suppose that a population of bacteria triples every hour and that the initial population is 500 bacteria. find an expression for the number n of bacteria after time t hours.

Answers

Answer:

= 500 x 3^t

Step-by-step explanation:

Exponential equation!

help someone need help with this question ​

Answers

cut shape into two which is triangle and a trapezium use to formulas of the identified shapes in solving the area

In this problem, p is in dollars and q is the number of units. Suppose that the demand for a product is given by pq + p + 100q = 50,000. (a) Find the elasticity when p = $200. (Round your answer to two decimal places.) (b) Tell what type of elasticity this is. O Demand is elastic. O Demand is inelastic. O Demand is unitary elastic. (c) How would a price increase affect revenue? O An increase in price will result in a decrease in total revenue. An increase in price will result in an increase in total revenue. Revenue is unaffected by price.

Answers

Based on this, we can conclude that an increase in price will result in a decrease in total revenue, since the increase in price will be offset by a larger decrease in quantity demanded

To find the elasticity of demand, we need to calculate the derivative of q with respect to p multiplied by the ratio of p to q.

Taking the derivative of the demand function with respect to p, we get:

q + 100 = -p/q

Multiplying both sides by p/q, we get:

p/q * q + 100p/q = -p

Simplifying, we get:

p/q = -100/(q^2 - p)

When p = $200, we can substitute this value into the equation to get:

200/q = -100/(q^2 - 200)

Solving for q, we get:

q = 50

So at a price of $200, the quantity demanded is 50 units. To find the elasticity, we need to calculate:

E = (dq/dp) * (p/q)

Taking the derivative of the demand function with respect to p, we get:

dq/dp = -1/q^2

Substituting p = $200 and q = 50, we get:

dq/dp = -1/2500

Substituting into the formula for elasticity, we get:

E = (-1/2500) [tex]\times[/tex] (200/50) = -0.16

Since the elasticity is negative, we know that demand is inversely related to price, meaning that as the price increases, the quantity demanded will decrease.

Since the elasticity is greater than 1 in absolute value, we know that demand is elastic, meaning that a change in price will result in a relatively larger change in quantity demanded.

Based on this, we can conclude that an increase in price will result in a decrease in total revenue, since the increase in price will be offset by a larger decrease in quantity demanded.

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let d be the solid between the surfaces z=0, x= 1, z= 1-x^2, and z= 1 -y^2 write the tripple integral dv showing all work

Answers

The triple integral for the given solid between the surfaces z=0, x= 1, z= 1-x^2, and z= 1 -y^2 is π/24.

To set up the triple integral for the solid between the given surfaces, we need to find the limits of integration for each variable.

Since the solid lies between the planes z=0 and z=1-x^2 and z=1-y^2, the limits for z are 0 to 1-x^2 and 0 to 1-y^2.

The solid is also bounded by the planes x=1 and y=1, so the limits for x and y are 0 to 1 and 0 to 1, respectively.

Therefore, the triple integral for the given solid is:

∫∫∫ dV = [tex]\int\limits^1_0[/tex] [tex]\int\limits^1_0[/tex]-y^2 [tex]\int\limits^1_0[/tex]-x^2 dzdydx

Simplifying the limits of integration, we get:

∫∫∫ dV = [tex]\int\limits^1_0[/tex] ∫ from 0 to √(1-x) ∫ from 0 to 1-x^2 dzdydx

Evaluating the integral, we get:

∫∫∫ dV = [tex]\int\limits^1_0[/tex] ∫ from 0 to √(1-x) (1-x^2) dydx

= [tex]\int\limits^1_0[/tex] [(1/3)(1-x^2)^(3/2)]dx

= (1/3) [tex]\int\limits^1_0[/tex] (1-x^2)^(3/2) dx

Making the substitution u = 1-x^2, we get:

∫∫∫ dV = (1/6) [tex]\int\limits^1_0[/tex] u^(1/2) (1-u)^(1/2) du

= (1/6) B(3/2, 3/2)

= (1/6) (Γ(3/2)Γ(3/2))/Γ(3)

= (1/6) [(√π/2)(√π/2)]/2

= π/24

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The volume of air in a person's lungs can be modeled with a periodic function. The
graph below represents the volume of air, in ml., in a person's lungs over time t,
measured in seconds.
What is the period and what does it represent in this
context?
Volume of air (in ml.)
200
2000
1900
1000
300
(2.5, 2900)
(5-5, 1100)
Time (in seconds)
(8.5, 2900)
(11.5, 1100)
11
PLEASE ANSWER

Answers

The successive crests and troughs on the periodic function graph indicates that the period is 6.0 seconds, therefore;

The period is 6.0 seconds, and it represents how long it takes the breathing cycle of inhalation and exhalation to repeat

What is a periodic function?

A periodic function is a function that repeats the same values of the output variable at regular intervals.

The coordinates of the points on the periodic function graph are; (2.5, 2900), (5.5, 1100), (8.5, 2900), and (11.5, 1100)

The period is the time it takes to complete a cycle of the periodic function, which is the time between successive crests or troughs.

The crests and troughs in the graph are;

Crest; (2.5, 2900), (8.5, 2900)

Trough; (5.5, 1100), (11.5, 1100)

The period, which is the time between successive crests and troughs are therefore;

Period, T = 8.5 - 2.5 = 11.5 - 5.5 = 6.0

The period = 6.0 secondsThe period represents how long it takes for the breathing cycle of inhalation and exhalation to repeat itself

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Let Dn be the average of n independent random digits from (o,...,9) a) Guess the first digit of Dn so as to maximize your chance of being correct. b) Calculate the chance that your guess is correct exactly for n = 1, 2, and approxi mately for a selection of larger values of n, and show the results in a graph. c) How large must n be for you to be 99% sure of guessing correctly?

Answers

we should guess 4 or 5 as the first digit to maximize our chance of being correct.

The graph below shows the approximate probabilities for n = 1 to 10.

we find that this occurs when n is approximately 65.

a) Since the digits are independent and uniformly distributed, the expected value of each digit is 4.5.

Therefore, we should guess 4 or 5 as the first digit to maximize our chance of being correct.

b) For n = 1, there is a 10% chance of guessing correctly. For n = 2, there are 100 possible two-digit numbers, and only 11 of them have an average of 4 or 5 (04, 05, 13, 14, 22, 23, 31, 32, 40, 41, and 50).

Therefore, the chance of guessing correctly is 11/100 or 11%. For larger values of n, we can approximate the probability using the central limit theorem. The distribution of Dn approaches a normal distribution with mean 4.5 and standard deviation sqrt(8.25/n). Therefore, the probability of guessing correctly can be approximated by the area under the normal curve between 3.5 and 5.5. The graph below shows the approximate probabilities for n = 1 to 10.

c) We want to find the smallest value of n such that the probability of guessing correctly is at least 0.99. From the central limit theorem, we know that the probability of guessing correctly is approximately normal with mean 4.5 and standard deviation sqrt(8.25/n).

Therefore, we want to find the smallest value of n such that the area under the normal curve to the right of 5.5 is at least 0.01. Using a standard normal table or calculator, we find that this occurs when n is approximately 65.

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If Ax = ax for nxn matrix A, nx1 matrix x, and a E R, determine a scalar ß with the property that A²x = Bx.

Answers

If Ax = ax for nxn matrix A, nx1 matrix x, and a E R, then the given initial value problem of the derivative is: y = (-4/3) sin(x) + (4√3/3) cos(x)

The given differential equation is:

d²y/dx² + y = 0

To solve this equation, we assume the solution to be of the form y = A sin(kx) + B cos(kx), where A and B are constants and k is a constant to be determined.

Taking the derivatives of y with respect to x, we get:

dy/dx = Ak cos(kx) - Bk sin(kx)

d²y/dx² = -Ak² sin(kx) - Bk² cos(kx)

Substituting the values in the differential equation, we get:

(-Ak² sin(kx) - Bk² cos(kx)) + (A sin(kx) + B cos(kx)) = 0

Simplifying, we get:

(Ak² + 1) sin(kx) + (Bk² + 1) cos(kx) = 0

Since sin(kx) and cos(kx) are linearly independent, the coefficients of each must be zero. Therefore, we have the following two equations:

Ak² + 1 = 0 ...(1)

Bk² + 1 = 0 ...(2)

Solving the equations for k, we get:

k = ±i

Thus, the general solution of the differential equation is:

y = A sin(x) + B cos(x)

To solve for the constants A and B, we use the given initial conditions:

y(π/3) = 0 and y'(π/3) = 2

Substituting the values in the above equation, we get:

A sin(π/3) + B cos(π/3) = 0

and

A cos(π/3) - B sin(π/3) = 2

Solving the equations for A and B, we get:

A = -4/3 and B = 4√3/3

Therefore, the solution of the given initial value problem is:

y = (-4/3) sin(x) + (4√3/3) cos(x)

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The current measurements in a strip of wire are assumed to follow a normal distribution with a mean of 10 milliamperes and a standard deviation of 2 milliamperes. 1. What is the 70th percentile of current measurement? 10.97 11.05 10.87 12.09

Answers

The 70th percentile of current measurement is 11.05 milliamperes.

How to find the 70th percentile of the current measurement?

To find the 70th percentile of the current measurement, we need to find the value of the current measurement that separates the lowest 70% of measurements from the highest 30% of measurements.

We can use a standard normal distribution table or a calculator to find the z-score that corresponds to the 70th percentile, which is 0.5244.

Then we can use the formula:

x = μ + zσ

where x is the value of the current measurement, μ is the mean of the distribution, σ is the standard deviation, and z is the z-score corresponding to the 70th percentile.

Plugging in the values, we get:

x = 10 + 0.5244(2) = 11.05

Therefore, the 70th percentile of current measurement is 11.05 milliamperes.

So, the answer is 11.05.

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For the rotation -442°, find the coterminal angle from 0° < Theta < 360°, the quadrant, and the reference angle.

Answers

Step-by-step explanation:

To find the coterminal angle with -442° we can add or subtract any integer multiple of 360°.

-442° + 360° = -82°

So one coterminal angle with -442° is -82°.

To determine the quadrant, we need to consider the sign of the angles in each quadrant. Since -442° is negative, it lies in the clockwise direction, which means it falls in the fourth quadrant.

To find the reference angle, we need to find the acute angle between the terminal side of the angle and the x-axis. We can do that by subtracting the nearest multiple of 360°.

-442° + 360° = -82° (the smallest positive coterminal angle)

Reference angle = 82°

Therefore, the coterminal angle with -442° between 0° and 360° is 318°, it lies in the fourth quadrant and the reference angle is 82°.

Please help! I'm stuck and have a test tomorrow.

Answers

The lengths of the given line segments using Pythagoras theorem are:

ON = 15.75

M O = 21.75

How to use Pythagoras theorem?

We know from circle geometry that the tangent to a circle is usually perpendicular to the radius of that circle at the point of tangency.

perpendicular to ON.

Now, we are given that:

MN = 15

MP = 6

We also see that ON = OP by radius definition. Thus:

Using Pythagoras theorem we have:

(6 + ON)² = 15² + ON²

36 + 12ON + ON² = 225 + ON²

36 + 12ON = 225

12ON =  225 - 36

ON = 189/12

ON = 15.75

Thus:

M O = 6 + 15.75

M O = 21.75

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For positive acute angles A and B, it is known that tan ⁡A = 11/60 ​and sin ⁡B = 3/5. Find the value of cos ⁡ ( A + B ) in simplest form.

Answers

Answer:

  cos(A+B) = 207/305

Step-by-step explanation:

You want the simplest form of cos(A+B), where tan(A) = 11/60 and sin(B) = 3/5.

Cosine of sum

The identity for the cosine of the sum of angles is ...

  cos(A+B) = cos(A)cos(B) -sin(A)sin(B)

In order to use this formula, we would need to find the sine and cosine of A, and the cosine of B.

Angle A

The two numbers in the ratio for tan(A) represent legs of a right triangle. The hypotenuse of that triangle is ...

  c² = a² +b²

  c² = 11² +60² = 121 +3600 = 3721

  c = √3721 = 61

Then the trig values of interest are ...

sin(A) = 11/61cos(A) = 60/61

Angle B

The cosine of angle B is ...

  cos(B) = √(1 -sin²(B)) = √(1 -(3/5)²) = √(16/25) = 4/5

Sum

Then our cosine is ...

  cos(A+B) = (60/61)(4/5) -(11/61)(3/5) = (60·4 -11·3)/(61·5)

  cos(A+B) = 207/305

Which of the following is an advantage to using graphs and diagrams?
OA. They are always the most useful in any problem.
OB. They help to visualize the problem.
OC. They sometimes give you too much information so you must
decide what is relevant to the problem.
OD. They are best used alone.

Answers

An advantage of using graphs and diagrams is B. They help to visualize the problem.

What are graphs and diagrams?

Graphs and diagrams are pictorial representations of data.

Graphs represent information using lines on two or three axes such as x, y, and z.

On the other hand, diagrams show the simple pictorial representation of what a thing looks like or how it works.

Graphs are scaled while diagrams may not be scaled.

Thus, we use graphs and diagrams to visualize data and information.

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1. Eliminate the parameter t to rewrite the parametric equation as a Cartesian equation.
x(t) = 3t − 2
y(t) = 5t2
2.Eliminate the parameter t to rewrite the parametric equation as a Cartesian equation.
x(t) = e2t
y(t) = e4t

Answers

To rewrite the given parametric equations as Cartesian equations, we need to eliminate the parameter t. For the first equation, we get the Cartesian equation y = (3/2)x - (5/4). For the second equation, we get the Cartesian equation y = ln(x^2).

For the first equation x(t) = 3t - 2, y(t) = 5t^2, we need to eliminate t to get the Cartesian equation. Solving for t in terms of x, we get t = (x + 2)/3. Substituting this value in the equation for y, we get y = 5((x+2)/3)^2. Simplifying this, we get y = (3/2)x - (5/4).

For the second equation x(t) = e^(2t), y(t) = e^(4t), we need to eliminate t to get the Cartesian equation. Taking the natural logarithm of both sides of the equation for y, we get ln(y) = 4t.

Solving for t, we get t = ln(y)/4. Substituting this value in the equation for x, we get x = e^(2(ln(y)/4)), which simplifies to x = y^(1/2). Therefore, the Cartesian equation for this parametric equation is y = ln(x^2).

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Help me find surface area! (Look at the image below)

Answers

The surface area of the image is C. 5/16 yd^2.

What is surface area of a shape?

The surface area of a given shape is the summation of the area of all its external surfaces. The shape and number of surfaces determines the surface area of a shape.

In the given image, the surface area can be determined by;

Area of triangle = 1/2*base*height

                          = 1/2*1/4*1/2

                          = 1/16

Area of each triangular surface is 1/16 sq. yd.

Area of its square base = length*length

                                = 1/4*1/4

                                = 1/16

Area of its square base is 1/16 sq. yd.

So that;

The surface area of the image = 1/16 + (4*1/16)

                                      = 1/16 + 1/4

                                      = (1 + 4) 16

                                      = 5/16

The surface area is C. 5/16 yd^2'

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write the equation of the plane with normal vector =⟨−5,2,5⟩ passing through the point =(4,1,8) in scalar form.

Answers

The equation of the plane with normal vector =⟨−5,2,5⟩ passing through the point =(4,1,8) in scalar form is 5x + 2y + 5z = 22.



1. Recall the equation of a plane in scalar form: Ax + By + Cz = D, where ⟨A, B, C⟩ is the normal vector of the plane, and (x, y, z) are the coordinates of any point on the plane.

2. In this case, the normal vector is given as ⟨−5, 2, 5⟩. Therefore, A = -5, B = 2, and C = 5.

3. The plane passes through the point (4, 1, 8). We can use this point to find the value of D. Substitute the point's coordinates into the equation: -5(4) + 2(1) + 5(8) = D.

4. Calculate the value of D: -20 + 2 + 40 = 22.

5. Now, we can write the equation of the plane in scalar form using the values of A, B, C, and D: -5x + 2y + 5z = 22.

So, the equation of the plane with normal vector ⟨−5, 2, 5⟩ passing through the point (4, 1, 8) in scalar form is: -5x + 2y + 5z = 22.

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A gardener already has 4 1/2 ft of fencing in his garden. He wants to fence in a square garden for his flowers. The length of one side of the garden will be 2 3/4 ft. How much more fencing will the gardener need to purchase?

Answers

The gardener will need to purchase an additional 6 1/2 ft of fencing to complete his square garden for his flowers.

You want to know how much more fencing the gardener will need to purchase if he already has 4 1/2 ft of fencing and

the length of one side of the square garden is 2 3/4 ft.

Since the garden is square, all sides have the same length. We know one side is 2 3/4 ft.

Multiply the length of one side (2 3/4 ft) by 4 to find the total amount of fencing needed for the entire garden:

2 3/4 × 4 = 11 ft.

Now, subtract the amount of fencing the gardener already has (4 1/2 ft) from the total amount needed (11 ft):

11 - 4 1/2 = 6 1/2 ft.

So, the gardener will need to purchase an additional 6 1/2 ft of fencing to complete his square garden for his flowers.

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compute the values of dy and δy for the function y=e3x 5x given x=0 and δx=dx=0.03.

Answers

The values of dy and δy for the function y=e3x 5x given x=0 and δx=dx=0.03 are:
dy = 0.6
δy = 0.6

To compute the values of dy and δy for the function y=e3x 5x given x=0 and δx=dx=0.03, we need to use the formula for the total differential of a function:

dy = (∂y/∂x)dx

where ∂y/∂x is the partial derivative of y with respect to x.

In this case, we have:

y = e3x 5x

∂y/∂x = 3e3x 5x + e3x 5

At x=0, this becomes:

∂y/∂x = 3(1) 5 + (1) 5 = 20

So, we can now calculate dy:

dy = (∂y/∂x)dx = (20)(0.03) = 0.6

This means that when x changes by 0.03, y changes by 0.6.

To calculate δy, we need to use the formula:

δy = |(∂y/∂x)δx|

where δx is the uncertainty in x.

In this case, we have:

δy = |(20)(0.03)| = 0.6

So, the uncertainty in y is also 0.6.

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find the volume of the solid region f. the region f is the region in the first octant that is bounded by the two parabolic cylinders z = 16 − y2 and z = 16 − x2.

Answers

The required volume of the solid region f is :

64/3 cubic units.

To find the volume of the solid region f bounded by the two parabolic cylinders z = 16 − y2 and z = 16 − x2 in the first octant, we need to set up a triple integral over the region f.

We can integrate over the x, y, and z coordinates, with the limits of integration as follows:

0 ≤ x ≤ 4
0 ≤ y ≤ 4
16 − y2 ≤ z ≤ 16 − x2

The limits for x and y are simply the boundaries of the first octant. The limits for z are given by the two equations of the parabolic cylinders, with the lower limit being the curve z = 16 − y2 and the upper limit being the curve z = 16 − x2.

Therefore, the volume of the solid region f is given by:

∫∫∫ f dV = ∫∫∫ 1 dV

Where f = 1, since we are integrating over a solid region with a constant density of 1.

Using the limits of integration above, we can evaluate the triple integral as follows:

∫0^4 ∫0^4 ∫16−y^2^16−x^2 1 dz dy dx

= ∫0^4 ∫0^4 [16 − y2 − (16 − x2)] dy dx

= ∫0^4 ∫0^4 (x2 − y2) dy dx

= ∫0^4 [(x2y − y3/3)]0^4 dx

= ∫0^4 (4x2) dx

= [4x3/3]0^4

= 64/3 cubic units.

Therefore, the volume of the solid region f is 64/3 cubic units.

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A quiz has 3 questions. Each question has 4 choices; a, b, c, or d. How many outcomes for answering the three questions are possible?

Answers

Answer:

64

Step-by-step explanation:

Number of outcomes = number of choices per question ^ number of questions

In this case, the number of choices per question is 4 and the number of questions is 3. Plugging these values into the formula, we get:

Number of outcomes = 4^3 = 64

Find the Laplace transform of the following functions.
a. a(t) = 28(t) + 3+ 4u(t) b. b(t) = 5 – 5e-2t(1 + 2t) c. c(t) = 10e-4t cos(20t + 36.99) d. d(t) = 1.5tu(t)- 1.5(t – 100u(t – 10) e. f(t) = 1.5tu(t) – 1.5(t – 10u(t – 10) – 15u(t – 10) f. g(t) = 1.5tu(t) - 1.5(t – 10)u(t – 10) - 3.0(t – 15)u(t – 15) g. h(t) = (t + 2)u(t – 3) h. j(t) = 6e-2t+11u(t – 5)

Answers

The Laplace transform of the following functions are: a. (112s + 16)/s; b. (5s^2 + 20s + 10e^-2s - 20)/s(s+2)^2; c. (10s - 40)/(s^2 + 400)(s+4); d. 1.5/s^2 - 1.5e^(-10s)/s^2 + 150/s; e. 1.5/s^2 - 1.5e^(-10s)/s^2 + 15/s - 15e^(-10s)/s; f. 1.5/s^2 - 1.5e^(-10s)/s^2 + 30/(s+15); g. e^(-3s) * (-1/s^2 + 2/s); h. 6/(s+2) * (1/(s+11)).

The Laplace transform of the following functions are:

a. L{a(t)} = 28L{δ(t)} + 3L{1} + 4L{u(t)}

= 28 + 3s + 4(1/s)

= (112s + 12 + 4)/s

= (112s + 16)/s

b. L{b(t)} = 5L{1} - 5L{e-2t(1 + 2t)}

= 5/s - 5L{e-2t}L{1 + 2t}

= 5/s - 5/(s + 2)^2 * (1 + 2/s)

= (5s^2 + 20s + 10e^-2s - 20)/s(s+2)^2

c. L{c(t)} = 10L{e-4t}L{cos(20t+36.99)}

= 10/(s+4) * [s/(s^2 + 400) - 4/(s^2 + 400)]

= (10s - 40)/(s^2 + 400)(s+4)

d. L{d(t)} = 1.5L{tu(t)} - 1.5L{(t-100)u(t-10)}

= 1.5(1/s^2) - 1.5e^(-10s)(1/s^2 - 100/s)

= 1.5/s^2 - 1.5e^(-10s)/s^2 + 150/s

e. L{f(t)} = 1.5L{tu(t)} - 1.5L{(t-10)u(t-10)} - 15L{u(t-10)}

= 1.5(1/s^2) - 1.5e^(-10s)(1/s^2 - 10/s) - 15e^(-10s)/s

= 1.5/s^2 - 1.5e^(-10s)/s^2 + 15/s - 15e^(-10s)/s

f. L{g(t)} = 1.5L{tu(t)} - 1.5L{(t-10)u(t-10)} - 3L{(t-15)u(t-15)}

= 1.5(1/s^2) - 1.5e^(-10s)(1/s^2 - 10/s) - 3e^(-15s)(1/s)

= 1.5/s^2 - 1.5e^(-10s)/s^2 + 30/(s+15)

g. L{h(t)} = L{(t+2)u(t-3)}

= e^(-3s) * L{(t+2)}

=  e^(-3s) * (-1/s^2 + 2/s)

h. L{j(t)} = 6L{e^(-2t)}L{e^(11u(t-5))}

= 6/(s+2) * L{e^(11u(t-5))}

= 6/(s+2) * L{e^(11u(t-5))}

= 6/(s+2) * (1/(s+11))

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