the temperature inside the freezer is -8°C .During a power cut temperature rose by 12°C .Find the temperature after the rise​

Answers

Answer 1

Answer:

4°C

Step-by-step explanation:

-8 + 12 = 4°C

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Related Questions

Find the measures of angle A and B. Round to the nearest degree.

Answers

The measure of angle A and B is 30° and 60° respectively.

What is trigonometric ratio?

Trigonometric Ratios are defined as the values of all the trigonometric functions based on the value of the ratio of sides in a right-angled triangle.

Sin(tetha) = opp/hyp

cos(tetha) = adj/hyp

tan(tetha) = opp/adj

16 is hypotenuse and 8 is opposite

therefore, sin(tetha) = 8/16

sin(tetha) = 0.5

tetha = sin^-1 ( 0.5)

= 30°

The sum of angle in a triangle is 180°. Therefore ,

angle B = 180-(90+30)

= 180-120 = 60°

therefore the measure of angle A and B is 30° and 60° respectively.

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the wronskian of the functions e^x and e^3x is

Answers

The Wronskian of the functions e^x and e^3x is :

2e^4x

The Wronskian is a mathematical concept used in the theory of ordinary differential equations to determine if a set of functions is linearly independent.

The Wronskian of the functions e^x and e^3x is given by the determinant of a matrix formed using these functions and their derivatives. Here's the calculation:

Wronskian(W) = | e^x    e^3x  |
                      | (d/dx)e^x (d/dx)e^3x |

Wronskian(W) = | e^x    e^3x  |
     | e^x    3e^3x |

Wronskian(W) = (e^x)(3e^3x) - (e^3x)(e^x) = 2e^4x

So, the Wronskian of the functions e^x and e^3x is 2e^4x.

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Can somebody help me with this? (Sin,Cos,Tan)

Answers

A=46° because 44+90=134, 180-134=46

a=22 because tangent ratio : tan(46)=a/21 so 21tan(46)=a=22 (to nearest tenth)

c=30 because Pythagoras theorem : 22^2 + 21^2 = c^2 = 925 and square root of that = 30 (rounded to nearest tenth)

Qué tipo de fracciones 5/5

Answers

Answer:

5/5 es una fracción adecuada ya que el numerador es igual al denominador.

Question 22
The future value, V, in dollars of an account with a monthly interest rate of i and
deposits on January 1st, February 1st and March 1st is given by the following equation
V = 50(1 + i)² + 100(1 + i) + 150. Which of the following equivalent expressions
contains the future value, as a constant or coefficient, for a monthly interest rate of
i = 0.1?
a. 50(i + 0.1)² + 190(i + 0.1) + 280.5
b. 50i² + 200i + 300
c.
50(i-0.1)² + 210(i - 0.1) + 320.5
d. 50(i + 2)² + 100

Answers

Answer:

c. 50(i-0.1)² + 210(i - 0.1) + 320.5.

Step-by-step explanation:

To find the equivalent expression that contains the future value for a monthly interest rate of i = 0.1, we simply substitute i = 0.1 into the equation V = 50(1 + i)² + 100(1 + i) + 150 and simplify.

V = 50(1 + 0.1)² + 100(1 + 0.1) + 150

V = 50(1.1)² + 100(1.1) + 150

V = 50(1.21) + 110 + 150

V = 60.5 + 110 + 150

V = 320.5

Therefore, the expression that contains the future value for a monthly interest rate of i = 0.1 is c. 50(i-0.1)² + 210(i - 0.1) + 320.5.

find the absolute maximum and absolute minimum values of f on the given interval. f(x) = x 25 x , [0.2, 20]

Answers

The absolute maximum value of f on the interval [0.2, 20] is 625 and the absolute minimum value of f on the interval [0.2, 20] is 5.04.

To find the absolute maximum and absolute minimum values of f on the given interval, we need to first find the critical points of f and then compare the values of f at these critical points and at the endpoints of the interval.

To find the critical points, we need to find where the derivative of f is equal to zero or undefined. Taking the derivative of f, we get:

f'(x) = 1 + 25 = 0
No solution, so the derivative is never equal to zero.

f'(x) is defined for all x in the interval [0.2, 20]. Therefore, the only critical points are the endpoints of the interval.

To find the value of f at the endpoints, we evaluate f(0.2) and f(20):

f(0.2) = (0.2)^2 + 25(0.2) = 5.04
f(20) = (20)^2 + 25(20) = 625

Comparing the values of f at the critical points and the endpoints, we can conclude that the absolute maximum value of f on the interval [0.2, 20] is 625 and the absolute minimum value of f on the interval [0.2, 20] is 5.04.

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Jim began a 110​-mile bicycle trip to build up stamina for a triathlete competition.​ Unfortunately, his bicycle chain​ broke, so he finished the trip walking. The whole trip took 4 hours. If Jim walks at a rate of 5 miles per hour and rides at 41 miles per​ hour, find the amount of time he spent on the bicycle.

Answers

Answer:

2.5 hours

Step-by-step explanation:

Let's call the time Jim spent on his bike "t", in hours.

We know that the total time of the trip was 4 hours, so the time he spent walking was 4 - t.

We can use the formula:

distance = rate x time

to set up two equations based on the distances traveled while biking and walking:

Distance biked = rate biking x time biking = 41t

Distance walked = rate walking x time walking = 5(4 - t) = 20 - 5t

The total distance of the trip is 110 miles, so:

Distance biked + distance walked = 110

Substituting the equations for distance biked and walked:

41t + 20 - 5t = 110

36t = 90

t = 2.5

So Jim spent 2.5 hours on his bike.

Hope this helps!

a. for any equation containing the variables x and y, the derivative dy/dx can be found by first using algebra to rewrite the equation in the form yf(x). true or false

Answers

The statement "For any equation containing the variables x and y, the derivative dy/dx can be found by first using algebra to rewrite the equation in the form y = f(x)." is true

For any equation containing the variables x and y, the derivative dy/dx can be found by first using algebra to rewrite the equation in the form y=f(x).
To find the derivative dy/dx, we need to have the equation in the form y = f(x).

By rewriting the equation in this form using algebra,

we can then differentiate the function f(x) with respect to x to find the derivative dy/dx.

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The domain and target set of functions f and g is R. The functions are defined as: f(x) = 2.r +3 g(x) = 5x +7 (a) fog? (b) gof? (c) (fog)^-l? (d) f^-1 o g^-1 (e) g^1 o f^-1

Answers

The problem involves finding the compositions of two functions f and g, their inverse functions, and the composition of the inverse functions. The solution demonstrates how to apply these concepts.

To find the compositions of functions and their inverse functions.

Using the given definitions of f and g.

We find their compositions and their inverse functions. Then we apply these results to find the compositions of inverse functions.

(a) fog: [tex]fog(x) = f(g(x)) = f(5x+7) = 2(5x+7) + 3 = 10x + 17[/tex]

(b) gof: [tex]gof(x) = g(f(x)) = g(2x+3) = 5(2x+3) + 7 = 10x + 22[/tex]

(c) [tex](fog)^-1:[/tex]

We first find fog(x) and then solve for x: [tex]fog(x) = 10x + 17[/tex]

[tex]x = (fog(x) - 17)/10[/tex]

[tex](fog)^-1(x) = (x - 17)/10[/tex]

[tex](d) f^-1 o g^-1:[/tex]

[tex]f^-1(x) = (x - 3)/2[/tex]

[tex]g^-1(x) = (x - 7)/5[/tex]

[tex](f^-1 o g^-1)(x) = f^-1(g^-1(x)) = f^-1((x-7)/5)[/tex] = [tex][(x-7)/5 - 3]/2 = (x-23)/10[/tex]

(e)[tex]g^1 o f^-1:[/tex] [tex]g^1(x) = (x-7)/5[/tex]

[tex](g^1 o f^-1)(x) = g^1(f^-1(x))[/tex]

=[tex]g^1((x-3)/2) = 5((x-3)/2) + 7[/tex]

=[tex](5x+2)/2[/tex]

Overall, the problem requires a solid understanding of function composition, inverse functions, and basic algebraic manipulation.

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if n ≥ 30 and σ is unknown, then 100(1 − α)onfidence interval for a population mean is _____.

Answers

The 100(1-α)% confidence interval for a population mean when n is greater than or equal to 30 and σ is unknown is: X ± t_(α/2, n-1) * s/√n.

If n is greater than or equal to 30 and the population standard deviation is unknown, we can use the t-distribution to construct a confidence interval for the population mean.

The formula for the confidence interval is:

X ± t_(α/2, n-1) * s/√n

where X is the sample mean, s is the sample standard deviation, n is the sample size, t_(α/2, n-1) is the t-score with (n-1) degrees of freedom that corresponds to the desired level of confidence (1-α), and α is the significance level.

The degrees of freedom for the t-distribution is (n-1) because we use the sample standard deviation to estimate the population standard deviation.

Therefore, the 100(1-α)% confidence interval for a population mean when n is greater than or equal to 30 and σ is unknown is:

X ± t_(α/2, n-1) * s/√n

where t_(α/2, n-1) is the t-score with (n-1) degrees of freedom that corresponds to the desired level of confidence (1-α).

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Please I need help on all of these expect for 1 and 2 please help I'll mark brainlisest ​

Answers

Answer:

Step-by-step explanation:

1 is 58

2 is 90

helpppp please find the area with explanation and answer thank you ​

Answers

First find the area of the rectangle.
Base multiplied by height
= 9x18
= 162 cm^2

Next, find the area of the triangle:
base multiplied by height divided by 2.

We can easily tell that the height is 9cm. The base of the triangle is also 9cm because one of the sides of the rectangle is the base of the triangle.

Base multiples by height divided by 2
= 9x9/2
= 81/2
= 40.5 cm^2

Now that we have the area of both the rectangle and triangle, we can subtract the unshaded part (the triangle) from the shaded part (rectangle).

= 162-40.5
= 121.5 cm^2

Therefore the area of the shaded part is 121.5cm^2

a cube has 2 faces painted red, 2 painted white, and 2 painted blue. what is the probability of getting a blue face or a red face in one roll? (enter your probability as a fraction.)

Answers

Therefore, the probability of getting a blue face or a red face in one roll is 2/3.

A cube has six faces, and we know that two of these faces are blue and two are red. Therefore, there are a total of 4 faces that are either blue or  red.

To calculate the probability of getting a blue or a red face in one roll, we can use the formula:

P(blue or red) = P(blue) + P(red)

The probability of rolling a blue face is the number of blue faces divided by the total number of faces, which is 2/6, since there are 2 blue faces out of a total of 6 faces. Similarly, the probability of rolling a red face is also 2/6.

So, substituting these values into the formula, we get:

P(blue or red) = 2/6 + 2/6

= 4/6

= 2/3

Therefore, the probability of getting a blue or a red face in one roll of the cube is 2/3.

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What number 0. 1 more than 149. 99

ASAP please needed dont just take points i am willing to give 15 points

Answers



Answer:
The number is 150.99

Step-by-Step Explanation:
To solve this math problem, we need to add 1 to the given number, which is 149.99.

1. Start with the given number 149.99
2. Add 1 to this number.
3. We get 150.99 as the answer.

Find the absolute maximum and absolute minimum values of f on the given interval. f(t) = 7t + 7 cot(t/2), [pi/4, 7pi/4] absolute minimum value absolute maximum value

Answers

The absolute minimum value of given trigonometric-function is 331.9 and absolute maximum value of the same function is 4403.

What is absolute value?

The non-negative value of x or its distance from zero on the number line, regardless of its sign, is the absolute value, modulus, or magnitude denoted by | x | for any real number x. When a function reaches its absolute minimum value, it has reached its lowest conceivable value, and when it reaches its absolute maximum value, it has reached its highest possible value.

Given that the trigonometric function is f(t) = 7t + [tex]7 cot\frac{t}{2}[/tex]

Also given the point at which the function has critical values= [[tex]\frac{\pi }{4} , \frac{7\pi }{2}[/tex] ]

Value of function at [tex]\frac{\pi }{4}[/tex] :

f( [tex]\frac{\pi }{4}[/tex] ) = 7( [tex]\frac{\pi }{4}[/tex] ) + 7 cot([tex]\frac{\pi }{4}.\frac{1}{2}[/tex])

       =[tex]\frac{7\pi }{4}[/tex]       + 7 cot ([tex]\frac{\pi }{8}[/tex])

       =315 + 7 cot 22.5

       =315  + 7(2.414)

       = 315 + 16.898

       =331.898

f( [tex]\frac{\pi }{4}[/tex] ) ≈ 331.9

Value of function at [tex]\frac{7\pi }{2}[/tex] :

f( [tex]\frac{7\pi }{2}[/tex] ) = 7( [tex]\frac{7\pi }{2}[/tex] ) + 7 cot([tex]\frac{7\pi }{2}.\frac{1}{2}[/tex])

        =[tex]\frac{49\pi }{2}[/tex]      + 7 cot ([tex]\frac{7\pi }{4}[/tex])

        =4410 + 7 cot 315

        =4410 + 7(-1)

        =4410-7

        =4403

f( [tex]\frac{7\pi }{2}[/tex] ) =4403

The minimum value=331.9 & maximum value is 4403

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If Zxy= 5y and all of the second order partial derivatives of Z are continuous, then (a) Zyx (b) Z xyz= (c) Zxyy=

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When all the second order partial derivatives of Z are continuous, (a) Zyx = 5y, (b) Zxyz = 0, (c) Zxyy = 5.

It is given that Zxy = 5y and all second-order partial derivatives of Z are continuous, we can find:

(a) Zyx:
Since all second-order partial derivatives are continuous, we can apply Clairaut's theorem, which states that mixed partial derivatives are equal if they exist and are continuous. Therefore, Zxy = Zyx, so Zyx = 5y.

(b) Zxyz:
To find Zxyz, we need to take the partial derivative of Zyx with respect to z. Since Zyx does not depend on z, its partial derivative with respect to z will be zero. Therefore, Zxyz = 0.

(c) Zxyy:
To find Zxyy, we need to take the second partial derivative of Zxy with respect to y. Given Zxy = 5y, we differentiate with respect to y again: d(5y)/dy = 5. So, Zxyy = 5.

In summary, Zyx = 5y, Zxyz = 0, and Zxyy = 5.

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Can you answer this please

Answers

Note that this is a vector calculus problem and the tabularized answers are attached accordingly. See the explanation below.

What is vector calculus?


This is a vector calculus problem, which is a branch of mathematics that deals with vectors and functions of vectors. It involves the study of vector fields, which are functions that assign a vector to each point in a given region of space, and the operations that can be performed on them, such as gradient, divergence, and curl. It is often studied in the context of calculus, physics, and engineering.

To fill in the table, we need to calculate the curl and divergence of the given vector fields and determine if they are conservative. Here are the calculations:

F1 = (x - 2z)i + (x + 7y + z)j + (z - 2y)k

Curl F1 = (∂Q/∂y - ∂P/∂z)i + (∂R/∂z - ∂P/∂x)j + (∂P/∂y - ∂Q/∂x)k

= (1 - 0)i + (-2 - 0)j + (7 - 1)k

= i - 2j + 6k

Div F1 = ∂P/∂x + ∂Q/∂y + ∂R/∂z

= 1 + 7 - 2

= 6

Since the curl of F1 is not equal to zero, F1 is not a conservative vector field.

Therefore, the table for F1 would be:

F1 Curl F1 DivF1 is conservative (Y/N)?

(x-2z)i + (x+7y + z)j + (z-2y)k <i - 2j + 6k> 6 N

F2 = yzi + xzj + zyk

Curl F2 = (∂Q/∂y - ∂P/∂z)i + (∂R/∂z - ∂P/∂x)j + (∂P/∂y - ∂Q/∂x)k

= z i + 0j + x k

Div F2 = ∂P/∂x + ∂Q/∂y + ∂R/∂z

= z + z + 1

= 2z + 1

Since the curl of F2 is not equal to zero, F2 is not a conservative vector field.

Therefore, the table for F2 would be:

F2 Curl F2 DivF2 is conservative (Y/N)?

yzi + xzj + zyk <zi + 0k> 2z + 1 N

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Note that this is a vector calculus problem and the tabularized answers are attached accordingly. See the explanation below.

What is vector calculus?


This is a vector calculus problem, which is a branch of mathematics that deals with vectors and functions of vectors. It involves the study of vector fields, which are functions that assign a vector to each point in a given region of space, and the operations that can be performed on them, such as gradient, divergence, and curl. It is often studied in the context of calculus, physics, and engineering.

To fill in the table, we need to calculate the curl and divergence of the given vector fields and determine if they are conservative. Here are the calculations:

F1 = (x - 2z)i + (x + 7y + z)j + (z - 2y)k

Curl F1 = (∂Q/∂y - ∂P/∂z)i + (∂R/∂z - ∂P/∂x)j + (∂P/∂y - ∂Q/∂x)k

= (1 - 0)i + (-2 - 0)j + (7 - 1)k

= i - 2j + 6k

Div F1 = ∂P/∂x + ∂Q/∂y + ∂R/∂z

= 1 + 7 - 2

= 6

Since the curl of F1 is not equal to zero, F1 is not a conservative vector field.

Therefore, the table for F1 would be:

F1 Curl F1 DivF1 is conservative (Y/N)?

(x-2z)i + (x+7y + z)j + (z-2y)k <i - 2j + 6k> 6 N

F2 = yzi + xzj + zyk

Curl F2 = (∂Q/∂y - ∂P/∂z)i + (∂R/∂z - ∂P/∂x)j + (∂P/∂y - ∂Q/∂x)k

= z i + 0j + x k

Div F2 = ∂P/∂x + ∂Q/∂y + ∂R/∂z

= z + z + 1

= 2z + 1

Since the curl of F2 is not equal to zero, F2 is not a conservative vector field.

Therefore, the table for F2 would be:

F2 Curl F2 DivF2 is conservative (Y/N)?

yzi + xzj + zyk <zi + 0k> 2z + 1 N

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Use the given points to answer the following questions. A(−4, 0, −4), B(3, 4, −3), C(2, 3, 7)Which of the points is closest to the yz - plane? a. A b. B c. C Which point lies in the xz-plane? a. A b. B c. C

Answers

The answer is option a i.e. A.

How to determine which point is closest to the yz-plane?

Hi! I'm happy to help with your question involving points, closest, and the xz-plane.

To determine which point is closest to the yz-plane, we need to look at the x-coordinate of each point. The yz-plane is where x = 0, so the point with the smallest absolute value of the x-coordinate is closest. Comparing the x-coordinates:
A(-4, 0, -4) -> |-4| = 4
B(3, 4, -3) -> |3| = 3
C(2, 3, 7) -> |2| = 2

C has the smallest absolute value of the x-coordinate, so it is closest to the yz-plane. Therefore, the answer is c. C.

To determine which point lies in the xz-plane, we need to look at the y-coordinate of each point. A point lies in the xz-plane when its y-coordinate is 0. Checking the y-coordinates:
A(-4, 0, -4) -> y = 0
B(3, 4, -3) -> y ≠ 0
C(2, 3, 7) -> y ≠ 0

Only point A has a y-coordinate of 0, so it lies in the xz-plane. Therefore, the answer is a. A.

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Three infinite lines of charge, rhol1 = 3 (nC/m), rhol2 = −3 (nC/m), and rhol3 = 3 (nC/m), are all parallel to the z-axis. If they pass through the respective points ...

Answers

The three infinite lines of charge, with densities of +3 (nC/m), -3 (nC/m), and +3 (nC/m), respectively, are parallel to the z-axis and pass through specific points.

To determine the electric field at a point, we need to use Coulomb's law and integrate over the length of each line of charge.

The direction of the electric field is perpendicular to the line of charge, and the magnitude is proportional to the charge density and inversely proportional to the distance from the point to the line of charge. The final result will be a vector sum of the electric fields due to each line of charge.

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complete question:

Three infinite lines of charge, rhol1 = 3 (nC/m), rhol2 = −3 (nC/m), and rhol3 = 3 (nC/m), are all parallel to the z-axis. If they pass through the respective points determine the nature of electric field.

John rolls a biased die repeatedly until he observes that both an even number and an odd number appear. The probability that an even number will appear on a single roll is p, for 0 < p < 1. Find the probability mass function of N, the number of rolls required to observe both an even number and an odd number. Hint: If N is the roll number that ends the experiment then that means that the N − 1 rolls previous to roll N must all be the same as each other (either all even’s or all odd’s) but different from the Nth roll. Also think about what the smallest value in the support of N must be. Finally remember that there are two cases: a sequence of even’s followed by an odd, or a sequence of odd’s followed by an even.)

Answers

Therefore, the probability mass function of N is:

[tex]P(N=3) = p*(1-p)\\P(N=4) = p*p*(1-p) + (1-p)*(1-p)*p\\P(N=5) = p*p*p*(1-p) + (1-p)*(1-p)*(1-p)*p + 2*p*(1-p)*p*(1-p)\\P(N=6) = p*p*p*p*(1-p) + (1-p)*(1-p)*(1-p)*(1-p) + 3*p*p*(1-p)*(1-p) + \    \ \ \  2*p*(1-p)*p*p*(1-p) + 2*p*p*(1-p)*p*(1-p) \\[/tex]

And so on, for larger values of N.

To find the probability mass function of N, we need to consider the two cases mentioned in the question.

Case 1: A sequence of events followed by an odd.
For this case, the probability of rolling an even number on the first roll is p. The probability of rolling the same even number on the second roll is also p. The probability of rolling an odd number on the third roll is (1-p) because the even numbers have been exhausted. So, the probability of this specific sequence of rolls occurring is p*p*(1-p).

Case 2: A sequence of odds followed by an even.
For this case, the probability of rolling an odd number on the first roll is 1-p. The probability of rolling the same odd number on the second roll is also 1-p. The probability of rolling an even number on the third roll is p because the odd numbers have been exhausted. So, the probability of this specific sequence of rolls occurring is (1-p)*(1-p)*p.

We can then find N's overall probability mass function by adding the probabilities of all possible sequences that lead to observing both an even and an odd number.

The smallest value in support of N must be 3, since it takes at least 3 rolls to observe both an even and an odd number.

Therefore, the probability mass function of N is:

[tex]P(N=3) = p*(1-p)\\P(N=4) = p*p*(1-p) + (1-p)*(1-p)*p\\P(N=5) = p*p*p*(1-p) + (1-p)*(1-p)*(1-p)*p + 2*p*(1-p)*p*(1-p)\\P(N=6) = p*p*p*p*(1-p) + (1-p)*(1-p)*(1-p)*(1-p) + 3*p*p*(1-p)*(1-p) + \    \ \ \  2*p*(1-p)*p*p*(1-p) + 2*p*p*(1-p)*p*(1-p) \\[/tex]

And so on, for larger values of N.

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Find the least squares solution of the system Ax = b.
A =
1 1 1 1 1 −1
0 2 −1
2 1 0
0 2 1
b =
1 0
1
−1
0
Expert Answer

Answers

To find the least squares solution of the system Ax = b, we first need to find the pseudoinverse of A (denoted as A+). Then, we can use the formula x = A+ b to find the least squares solution.

To find the pseudoinverse of A, we can use the Moore-Penrose inverse formula:

A+ = (A^T A)^-1 A^T

where A^T is the transpose of A.

Using this formula, we get:

A^T A =
1 0 3 0
0 10 1 4
3 1 2 2
0 4 2 2
0 0 0 6
1 -1 0 0

Taking the inverse of A^T A, we get:

(A^T A)^-1 =
0.0447 -0.0206 0.0358 -0.0323 -0.0171 0.0478
-0.0206 0.0111 -0.0115 0.0074 0.0035 -0.0155
0.0358 -0.0115 0.0505 -0.0395 -0.0125 0.0383
-0.0323 0.0074 -0.0395 0.0356 0.0082 -0.0295
-0.0171 0.0035 -0.0125 0.0082 0.0068 -0.0099
0.0478 -0.0155 0.0383 -0.0295 -0.0099 0.0451

Multiplying A^T and b, we get:

A^T b =
1
1
-1
-1
1
-2

Using the formula x = A+ b, we get:

x =
0.2
0.1
-0.6

Therefore, the least squares solution of the system Ax = b is:

x = (0.2, 0.1, -0.6)

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Check image down below. Very urgent

Answers

Check the picture below.

[tex]\textit{area of a trapezoid}\\\\ A=\cfrac{h(a+b)}{2}~~ \begin{cases} h~~=height\\ a,b=\stackrel{parallel~sides}{bases~\hfill }\\[-0.5em] \hrulefill\\ a=8\\ b=10\\ h=30 \end{cases}\implies A=\cfrac{30(8+10)}{2}\implies A=270[/tex]

Part B
Ann's second option is rezoning two separate plots of land. One is square, and the other is triangular with an area of 32,500 square meters. For this second option, the total area would be 76,600 square meters, which can be represented by this equation, where x is the side length of the square park:
×2 + 32,500 = 76,600.
Use the most direct method to solve this equation and find the side length of the square-shaped park.
Explain your reasoning for both the solving process and the solution.

Answers

The solution of quadratic equation is Both sides are approximately (76,601.5 ≈ 76,600)equal, we can conclude that our solution is correct.

What is quadratic equation?

A quadratic equation is a polynomial equation of the second degree, meaning it contains one or more terms that involve a variable raised to the power of two. The standard form of a quadratic equation is:

ax² + bx + c = 0

According to given information

where a, b, and c are constants, and x is the variable.

To solve the equation 2x² + 32,500 = 76,600, we can follow these steps:

Subtract 32,500 from both sides to isolate the term with x²:

2x² = 44,100

Divide both sides by 2 to isolate x²:

x² = 22,050

Take the square root of both sides to solve for x:

x = √(22,050)

Simplify the square root, if possible:

x ≈ 148.53

Therefore, the side length of the square-shaped park is approximately 148.53 meters.

We used the most direct method, which is algebraic manipulation, to solve the equation for x. We first isolated the term with x² by subtracting 32,500 from both sides, then we divided by 2 to isolate x², and finally we took the square root of both sides to solve for x.

We can verify our solution by substituting x ≈ 148.53 back into the original equation and checking if both sides are equal.

2(148.53)² + 32,500 ≈ 76,600

44,101.5 + 32,500 ≈ 76,600

76,601.5 ≈ 76,600

Since both sides are approximately equal, we can conclude that our solution is correct.

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can someone please help me with this??
What are the first two steps of drawing a triangle that has all side lengths equal to 6 centimeters?

Select from the drop-down menus to correctly complete the statements.

Draw a segment (6,9,12) centimeters long. Then from one endpoint, draw a (30,60,90) ° angle.

Answers

The complete sentences are

Draw a segment 6 centimeters long.

Then from one endpoint, draw a 30° angle.

Construction of a triangle:

To construct a triangle, we need to know the length of three sides, the length of two sides and the measure of the angle between them, or the length of one side and the measure of the two adjacent angles.

In the given problem we know the length of the sides hence, we can follow the given steps to draw the required triangle

Here we have

Equal length of the side of the triangle = 6 cm

Since the sides are equal the resultant triangle will be an equilateral triangle

To draw a triangle with all side lengths equal to 6 centimeters, we need to follow these steps:

Draw a straight line segment of length 6 cm. This will be one side of the equilateral triangle.At one end of the line segment, draw an arc with a radius of 6 cm, using a compass. This will be the second side of the equilateral triangle. Then from one endpoint, draw a (30,60,90) ° angle.These two steps will give you two of the three sides of the equilateral triangle. To complete the triangle, you can repeat Step 2 from the other end of the line segment.

Once all three sides are drawn, you can verify that the triangle is equilateral by measuring the length of each side.

Therefore,

The complete sentences are

Draw a segment 6 centimeters long.

Then from one endpoint, draw a 30° angle.

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determine whether the series is convergent or divergent. [infinity] ∑ ln (n^2 + 1) / (2n^2 + 7) n = 1 A. convergent B. divergent

Answers

The given series is convergent.

How to determine whether the series is convergent or divergent?

We will use the ratio test to determine the convergence or divergence of the given series:

r = [tex]lim_{n\rightarrow \infty} |(ln[(n+1)^2+1]/(2(n+1)^2+7)) / (ln(n^2+1)/(2n^2+7))|[/tex]

r =[tex]lim_{n\rightarrow \infty} |(ln[(n+1)^2+1]/(2(n+1)^2+7)) * ((2n^2+7)/(ln(n^2+1)))|[/tex]

r = [tex]lim_{n\rightarrow \infty} |(ln[(n+1)^2+1]/ln(n^2+1)) * (2n^2+7)/(2(n+1)^2+7)|[/tex]

We note that the expression [tex](ln[(n+1)^2+1]/ln(n^2+1))[/tex] approaches 1 as n approaches infinity. So we can simplify the above expression as:

r = [tex]lim_{n\rightarrow \infty} |(2n^2+7)/(2(n+1)^2+7)|[/tex]

Now, as n approaches infinity, the terms [tex](2n^2+7)[/tex] and [tex]2(n+1)^2+7[/tex] both approach infinity. So we can apply L'Hopital's rule to the limit:

r =[tex]lim_{n\rightarrow \infty } |(4n)/(4n+4)| = lim_{n\rightarrow \infty} |n/(n+1)| = 1[/tex]

Since the limit r is equal to 1, the ratio test is inconclusive. Therefore, we cannot determine the convergence or divergence of the given series using this test.

However, we can use the comparison test to show that the series is convergent. We note that:

[tex]ln(n^2+1) < n^2+1[/tex] for all n >= 1

So we have:

[tex]ln(n^2+1)/(2n^2+7) < (n^2+1)/(2n^2+7)[/tex]

Since the series ∑ [tex](n^2+1)/(2n^2+7)[/tex] converges by the limit comparison test with the series ∑ [tex]1/n^2[/tex], the series ∑ [tex]ln(n^2+1)/(2n^2+7)[/tex] is also convergent by the comparison test.

Therefore, the given series is convergent.

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The given series is convergent.

How to determine whether the series is convergent or divergent?

We will use the ratio test to determine the convergence or divergence of the given series:

r = [tex]lim_{n\rightarrow \infty} |(ln[(n+1)^2+1]/(2(n+1)^2+7)) / (ln(n^2+1)/(2n^2+7))|[/tex]

r =[tex]lim_{n\rightarrow \infty} |(ln[(n+1)^2+1]/(2(n+1)^2+7)) * ((2n^2+7)/(ln(n^2+1)))|[/tex]

r = [tex]lim_{n\rightarrow \infty} |(ln[(n+1)^2+1]/ln(n^2+1)) * (2n^2+7)/(2(n+1)^2+7)|[/tex]

We note that the expression [tex](ln[(n+1)^2+1]/ln(n^2+1))[/tex] approaches 1 as n approaches infinity. So we can simplify the above expression as:

r = [tex]lim_{n\rightarrow \infty} |(2n^2+7)/(2(n+1)^2+7)|[/tex]

Now, as n approaches infinity, the terms [tex](2n^2+7)[/tex] and [tex]2(n+1)^2+7[/tex] both approach infinity. So we can apply L'Hopital's rule to the limit:

r =[tex]lim_{n\rightarrow \infty } |(4n)/(4n+4)| = lim_{n\rightarrow \infty} |n/(n+1)| = 1[/tex]

Since the limit r is equal to 1, the ratio test is inconclusive. Therefore, we cannot determine the convergence or divergence of the given series using this test.

However, we can use the comparison test to show that the series is convergent. We note that:

[tex]ln(n^2+1) < n^2+1[/tex] for all n >= 1

So we have:

[tex]ln(n^2+1)/(2n^2+7) < (n^2+1)/(2n^2+7)[/tex]

Since the series ∑ [tex](n^2+1)/(2n^2+7)[/tex] converges by the limit comparison test with the series ∑ [tex]1/n^2[/tex], the series ∑ [tex]ln(n^2+1)/(2n^2+7)[/tex] is also convergent by the comparison test.

Therefore, the given series is convergent.

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There are 100 pupils in a group. The only languages available for the group study are Spanish and Russian. 30 pupils study Spanish. 54 pupils study Russian. 35 pupils study neither Spanish nor Russia. Complete the venn diagram​

Answers

From the Venn diagram, the values of a, b, c and d are11,19,35,35 respectively

What is Venn diagram?

A Venn diagram is an illustration that uses circles to show the relationships among things or finite groups of things. Circles that overlap have a commonality while Circles that do not overlap do not share those traits.

The universal set is ∈ = 100

The languages are

Spanish = 30

Russian = 54

(S∪ R)¹ = 35 = d

a = Spanish only = a-b

30-b = a

Russia only = c-b

54 - b

Therefore, The universal set ∈ is

100 = (a-b) + (b)+ (c-b) +(d)

100 =  30-b + b + 54 - b + 35

100 = 119 - b = 119-100

b= 19

Therefore,

a = 30 -19 =11

b = 19

c = 59 - 19 35

d = 35

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Results of a poll evaluating support for drilling for oil and natural gas off the coast of California were introduced in Exercise 6.29
College Grad Yes No
Support 154 132
Oppose
180 126
Dont Know 104 131
Total 438 389
(a) What percent of college graduates and what percent of the non-college graduates in this sample support drilling for oil and natural gas off the Coast of California?

Answers

In this sample, 154 college graduates and 132 non-college graduates support drilling for oil and natural gas off the coast of California. Therefore, the percentage of college graduates who support drilling is (154/438) x 100 = 35.16%, while the percentage of non-college graduates who support drilling is (132/389) x 100 = 33.95%.

It is worth noting that college graduates have a larger proportion of support than non-college graduates, although the difference is not statistically significant. The percentages of those who oppose and those who are unsure, on the other hand, differ dramatically between the two categories. In this sample, 41.1% of college graduates were opposed to drilling, compared to 32.4% of non-college graduates, and 23.7% were uncertain, compared to 33.6% of non-college graduates.

Overall, the evidence reveals that, while there is some difference in beliefs between college graduates and non-college graduates, the differences are not statistically significant. In both categories, the percentages of support, opposition, and undecided are quite identical. It is worth noting, however, that a sizable proportion of both groups (about one-third) are undecided, implying that there is still substantial disagreement and confusion around this subject.

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There is 210 ml of water in the cupoid-shaped container below

Work out the depth of the water in this container.

Give your answer in centermiters ( cm ) and give any decimal answers to 1.d.p

Answers

Answer:

7cm

Step-by-step explanation:

Since 1ml=1cm³ that means 210ml=210cm³

The volume of a cuboid( rectangular prism) is given by L×B×H

The height of the water is just as good as the depth.

L×B×H=volume

6×5×H=210cm³ (divide both sides by 6×5 or 30 to isolate the variable)

[tex] \frac{6 \times 5 \times h}{6 \times 5} = \frac{210}{6 \times 5} [/tex]

H=7cm

: . Depth of water is = 7cm

What is the x-coordinate of the vertex of the parabola whose equation is y = 3x2 + 9x?

A. -3
B. -[tex]\frac{2}{3}[/tex]
C. -1 [tex]\frac{1}{2}[/tex]

Answers

The x-coordinate of the vertex of the parabola whose equation is given would be -3/2. Option C.

x-coordinate calculation

To find the x-coordinate of the vertex of the parabola, we need to use the formula:

x = -b/2awhere a and b are the coefficients of the quadratic equation in standard form (ax^2 + bx + c).

In this case, a = 3 and b = 9, so:

x = -9/(2*3) = -3/2

Therefore, the x-coordinate of the vertex of the parabola is -3/2.

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The x-coordinate of the vertex of the parabola whose equation is given would be -3/2. Option C.

x-coordinate calculation

To find the x-coordinate of the vertex of the parabola, we need to use the formula:

x = -b/2awhere a and b are the coefficients of the quadratic equation in standard form (ax^2 + bx + c).

In this case, a = 3 and b = 9, so:

x = -9/(2*3) = -3/2

Therefore, the x-coordinate of the vertex of the parabola is -3/2.

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2.4. how many flags can we make with 7 stripes, if we have 2 white, 2 red, and 3 green stripes?

Answers

There are 1716 different flags that can be made with 7 stripes, consisting of 2 white, 2 red, and 3 green stripes using the formula for combinations with repetition.

We can use the formula for combinations with repetition to solve this problem

n = total number of items (stripes)

r₁ = number of items of type 1 (white stripes)

r₂ = number of items of type 2 (red stripes)

r₃ = number of items of type 3 (green stripes)

The formula is

C(n+r₁+r₂+r₃-1, r₁+r₂+r₃-1) = C(7+2+2+3-1, 2+2+3-1) = C(13, 6) = 1716

Therefore, we can make 1716 different flags with 7 stripes if we have 2 white, 2 red, and 3 green stripes.

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