The value of x for the given value of y in the equation y = x + 2 - 1 is 1
Finding the value of x for the given value of yFrom the question, we have the following parameters that can be used in our computation:
y = x + 2 - 1
Also, we have the value of y to be
y = 0
When the equation is evaluated, we have
y = x - 1
substitute the known values in the above equation, so, we have the following representation
x - 1 = 0
Add 1 to both sides
x = 1
Hence, the value of x for the given value of y is 1
Read more about equations at
https://brainly.com/question/148035
#SPJ1
color blindness occurs in 4% of the male population. design a simulation that can be used to estimate the probablitiy that a randomly chose male will be color blind
To design a simulation to estimate the probability that a randomly chosen male will be color blind, you can follow these steps:
Set up the simulation: Determine the number of males to include in your simulation. Let's say you choose to simulate 10,000 males.
Generate random color blindness: Use a random number generator to assign color blindness status to each simulated male. Since color blindness occurs in 4% of the male population, you can randomly assign color blindness to approximately 4% of the males in your simulation.
Count the number of color-blind males: Iterate through the simulated males and count the number of males who are color blind.
Calculate the probability: Divide the count of color-blind males by the total number of males in the simulation to obtain the estimated probability. Multiply the result by 100 to express it as a percentage.
Here's a Python code snippet to illustrate this simulation:
import random
num_simulated_males = 10000
num_color_blind_males = 0
for _ in range(num_simulated_males):
if random.random() <= 0.04: # Probability of being color blind
num_color_blind_males += 1
probability_color_blind = (num_color_blind_males / num_simulated_males) * 100
print(f"Estimated probability of a randomly chosen male being color blind: {probability_color_blind:.2f}%")
Keep in mind that this simulation provides an estimate based on the assumed probability of 4% for color blindness in the male population. The actual probability may vary slightly, but running the simulation with a large number of simulated males should yield a reasonably accurate estimate.
Translate each question into mathematical expression and at part II write the right letter
Answer:
Step-by-step explanation:
There are 140 students in the seventh grade, and 20% are in the Environmental Club. How many students are in the Environmental Club?
Answer:
28
Step-by-step explanation:
You want to know what 20% of 140 is.
PercentThe % symbol can be considered to mean "/100". This means ...
20% = 20/100
and 20% of 140 is ...
20% × 140 = 20/100 × 140 = 2800/100 = 28
There are 28 students in the Environmental Club.
__
Additional comment
You know that 10% is 1/10. This fraction can of 140 can be found by moving the decimal point one place left:
10% of 140. = 14.0
Of course, 20% is twice as much, so ...
20% of 140 = 2 × (10% of 140) = 2 × 14 = 28
In this context, "of" means "times": 20% of 140 means 20% × 140.
<95141404393>
please help thank you!!
Using the sum and difference formula and trigonometric identities the value of tanθ and cosθ are cos(11π/12) = (-√6 + √2) / 4 and tan(11π/12) = 0 respectively.
Determine tanθ using the sum formulaThe identity tan(α + β) = (tanα + tanβ) / (1 - tanα * tanβ) may be used to calculate tan using the sum method.
Here, we have θ = 11π/12, so we need to express it as the sum of two angles.
In this problem, we are given θ = 11π/12 and we can use the sum of two angles.
11π/12 = π/6 + 5π/6
putting the value of α = π/6 and β = 5π/6.
The sum formula of the tangent becomes;
tan(11π/12) = tan(α + β) = (tanα + tanβ) / (1 - tanα * tanβ)
Let's put in the values of α and β:
tan(11π/12) = (tan(π/6) + tan(5π/6)) / (1 - tan(π/6) * tan(5π/6))
The tangent of π/6 and 5π/6 will have values as;
tan(π/6) = √3/3
tan(5π/6) = -√3/3
Let's put in these values into the sum formula;
tan(11π/12) = (√3/3 + (-√3/3)) / (1 - (√3/3 * (-√3/3)))
tan(11π/12) = 0 / (1 - (-3/9))
= 0 / (1 + 1/3)
= 0 / (4/3)
= 0
Therefore, tan(11π/12) = 0.
Part B;
Using difference formula, the value of cosθ can be expressed using the trigonometric identity
cos(α - β) = cosα * cosβ + sinα * sinβ
Since we are given θ = 11π/12;
Let's express this as the difference of two angles
11π/12 = 3π/4 - π/6
Putting the value α = 3π/4 and β = π/6.
Using the difference formula for cosine;
cos(11π/12) = cos(α - β) = cosα * cosβ + sinα * sinβ
Let's plug in the values of α and β
cos(11π/12) = cos(3π/4 - π/6) = cos(3π/4) * cos(π/6) + sin(3π/4) * sin(π/6)
The known values of cosine and sine for 3π/4 and π/6 are;
cos(3π/4) = -√2/2
cos(π/6) = √3/2
sin(3π/4) = √2/2
sin(π/6) = 1/2
Plugging these values into the difference formula;
cos(11π/12) = (-√2/2 * √3/2) + (√2/2 * 1/2)
cos(11π/12) = -√6/4 + √2/4
Combining like terms:
cos(11π/12) = (-√6 + √2) / 4
Therefore, cos(11π/12) = (-√6 + √2) / 4.
Learn more on sum and difference formula here;
https://brainly.com/question/29164562
#SPJ1
Wayward shoes spends $13 making each pair of its slip-on sneakers. Last week, they sold 95 pairs of these sneakers for $45 each. How much profit did Wayward shoes make last week.
Answer:
$3040 profit made
Step-by-step explanation:
$13×95=$1235 cost to make all the shoes they sold
$45×95=$4275 money she made
$4275-$1235=$3040 profit
In a normal distribution of 1027 values, the mean is 75 and the standard deviation is 8. What is the closest number of values that would be above 91?
A) 26
B) 2567
C) 976
D) 51
Answer: 26
Step-by-step explanation:
The closest number of values above 91 is 23.
We have,
To find the closest number of values that would be above 91 in a normal distribution with a mean of 75 and a standard deviation of 8, we need to calculate the z-score for the value 91 and then find the proportion of values above that z-score.
The formula for calculating the z-score is:
z = (x - mean) / standard deviation
where x is the value of interest, the mean is the mean of the distribution, and the standard deviation is the standard deviation of the distribution.
In this case,
x = 91, mean = 75, and standard deviation = 8.
Plugging these values into the formula, we get:
z = (91 - 75) / 8 = 2
To find the proportion of values above a z-score of 2, we can refer to the z-table or use a calculator that provides the cumulative distribution function (CDF) for the standard normal distribution.
Looking up the z-score of 2 in the z-table or using a calculator, we find that the proportion of values above a z-score of 2 is approximately 0.0228.
To determine the number of values above 91 in a distribution of 1027 values, we multiply the proportion above 91 (0.0228) by the total number of values (1027):
Number of values above 91 = 0.0228 x 1027 ≈ 23.47
Since we are looking for the closest whole number, the closest number of values above 91 would be 23.
Therefore,
The closest number of values above 91 is 23.
Learn more about normal distribution here:
https://brainly.com/question/31327019
#SPJ1
Please solve the question
[tex]\frac{f(x)}{g(x)} =\frac{-10x}{x+3\\}\\ (\frac{f}{g} )(2)=\frac{-10(2)}{2+3}\\ \\\frac{-20}{5} =-4[/tex]
Answer is -4
partners with businesses to provide loans to
consumers for purchasing goods and services
Consumer lending Partnerships play a crucial role in facilitating economic transactions by bridging the gap between businesses and consumers.
A consumer lending partnership is a collaboration between businesses and financial institutions that aims to provide loans to consumers for purchasing goods and services. This partnership allows businesses to offer their customers convenient financing options, enabling them to make purchases that they might not be able to afford upfront. It benefits both the businesses and consumers by promoting sales and providing access to affordable credit.
In this arrangement, businesses typically partner with banks, credit unions, or other financial institutions that specialize in consumer lending. These lenders evaluate the creditworthiness of consumers and provide loans based on predetermined criteria such as credit scores, income levels, and repayment history. The loans can be structured as personal loans, installment loans, or revolving credit lines, depending on the nature of the purchases and the agreement between the lender and the business.
By partnering with financial institutions, businesses can offer attractive financing options to their customers, which can increase sales and customer loyalty. Consumers benefit from the ability to make purchases and pay them off over time, spreading the cost of expensive items or services into affordable monthly payments. This arrangement expands consumer purchasing power and provides access to necessary or desirable goods and services that may otherwise be out of reach.
In addition to benefiting businesses and consumers, consumer lending partnerships also contribute to the growth of the financial institutions involved. These partnerships create opportunities for lenders to expand their customer base, generate interest income from loan repayments, and establish relationships with businesses in various industries.
Overall, consumer lending partnerships play a crucial role in facilitating economic transactions by bridging the gap between businesses and consumers. They provide a mutually beneficial solution that empowers consumers with access to financing and enables businesses to drive sales and foster customer satisfaction.
To know more about Partnerships .
https://brainly.com/question/14731767
#SPJ11
Carlos has a collection of old vinyl records. To play some of the records, the turntable rotates through an angle of 3/2pi radians in 1 second. How many revolutions does the record make in one minute?
A. 33 1/3 revolutions per minute
B. 45 revolutions per minute
C. 78 revolutions per minute
D. 16 2/3 revolutions per minute
Step-by-step explanation:
We know that the turntable rotates through an angle of 3/2pi radians in 1 second.
To find the number of revolutions in one minute, we need to convert the angle to revolutions per minute.
There are 2π radians in one revolution, so we can set up a proportion:
(3/2π radians) / (1 second) = (x revolutions) / (1 minute)
To solve for x, we can cross-multiply and simplify:
(3/2π) * (1 minute) = x * (1 second) * (2π)
x = (3/2π) * (60/1)
x = 45 revolutions per minute
Therefore, the answer is B. 45 revolutions per minute.
I hope it helps!!
The formula for continuously compounded interest is given by
, where
is the account balance,
is the principal,
is the annual interest rate (expressed as a decimal), and
is the time in years.
If $5000 is deposited into an account earning an annual interest rate of 2.5%, compounded continuously, then what is the account balance after 12 years?
Round your answer to the nearest dollar and do not include the $ symbol in your answer.
The balance of the account after 12 years is given as follows:
$9,111.
How to obtain the balance of the account?The balance of an account after t years, using continuous compounding, is given by the exponential equation presented as follows:
[tex]A(t) = A(0)e^{kt}[/tex]
In which the parameters are given as follows:
A(0) is the initial deposit.k is the interest rate, as a decimal.The parameter values for this problem are given as follows:
A(0) = 5000, k = 0.025, t = 12.
Hence the balance of the account after 12 years is given as follows:
[tex]A(t) = A(0)e^{kt}[/tex]
[tex]A(12) = 5000e^{0.025 \times 24}[/tex]
A(12) = $9,111.
More can be learned about continuous compounding at https://brainly.com/question/7513822
#SPJ1
RQPS is rotated 180° clockwise about the origin.
10
9
8
7
6
5
4
3
R
S
P
123 5678910
Q
What are the coordinates of S"?
OA (-4,-2)
O B. (-4,2)
OC. (-2,-4)
OD. (4,-2)
← PREVIOUS
Search
C
=
G
=
C
10
Answer:
To rotate a point 180° clockwise about the origin, we need to flip the signs of the x- and y-coordinates.
The original coordinates of point S are (3,4).
Flipping the signs of both coordinates gives us (-3,-4).
However, we also need to move the point to the second quadrant, so we need to flip the sign of the x-coordinate again.
Therefore, the coordinates of S" are (-(-3),-4), which simplifies to (3,-4).
So the answer is (D) (4,-2).
Step-by-step explanation:
What is the surface area of a cylinder with base radius
3
33 and height
8
88?
Either enter an exact answer in terms of
�
πpi or use
3.14
3.143, point, 14 for
�
πpi and enter your answer as a decimal.
Answer:
123.79
Step-by-step explanation:
The formula for the surface area of a cylinder is:
A = 2πr^2 + 2πrh
where r is the radius of the base, h is the height, and π is the constant pi.
Plugging in the given values, we get:
A = 2π(2.22)^2 + 2π(2.22)(6.66)
A = 2π(4.9284) + 2π(14.7912)
A = 30.9748 + 92.8184
A = 123.7932
Rounding to two decimal places, the surface area of the cylinder is approximately 123.79 square units.
Learn more about the surface area: brainly.com/question/29298005
Andrei, Amit and Andrew were each asked to factor the term 20x^620x
6
20, x, start superscript, 6, end superscript as the product of two monomials. Their responses are shown below.
Andrei Amit Andrew
20x^6=(2x)(10x^5)20x
6
=(2x)(10x
5
)20, x, start superscript, 6, end superscript, equals, left parenthesis, 2, x, right parenthesis, left parenthesis, 10, x, start superscript, 5, end superscript, right parenthesis 20x^6=(4x^3)(5x^3)20x
6
=(4x
3
)(5x
3
)20, x, start superscript, 6, end superscript, equals, left parenthesis, 4, x, cubed, right parenthesis, left parenthesis, 5, x, cubed, right parenthesis 20x^6=(20x^2)(x^3)20x
6
=(20x
2
)(x
3
)20, x, start superscript, 6, end superscript, equals, left parenthesis, 20, x, squared, right parenthesis, left parenthesis, x, cubed, right parenthesis
1) Which of the students factored 20x^620x
6
20, x, start superscript, 6, end superscript correctly?
Choose all answers that apply:
Choose all answers that apply:
(Choice A) Andrei
A
Andrei
(Choice B) Amit
B
Amit
(Choice C) Andrew
C
Andrew
(Choice D) None of the above
D
None of the above
Based on the given responses, the student who factored 20x^6 = (2x)(10x^5) correctly is Andrei. Therefore, the correct answer is (Choice A) Andrei.
Among the given responses, the student who factored 20x^6 = 20, x to the power of 6 correctly is Andrei. Andrei's factorization is (2x)(10x^5), which correctly represents the original term 20x^6. Therefore, the correct answer is (Choice A) Andrei.
Amit's factorization is (4x^3)(5x^3), which is incorrect because it breaks down the term into two factors with the same exponent, while the original term has an exponent of 6.
Andrew's factorization is (20x^2)(x^3), which is also incorrect as it does not accurately represent the original term 20x^6.
Hence, the only student who correctly factored 20x^6 = 20, x to the power of 6 is Andrei.
The right answer is A. Andrei who factored 20x^6 = (2x)(10x^5) correctly.
For more such question on factored
https://brainly.com/question/43919
#SPJ11
78.95*0.3
Can someone please show me a step by step of how I would write this out and solve it? (No calculators)
Answer:
23.685
Step-by-step explanation:
Ok, lets convert them into fractions
78.95=7895/100
0.3=3/10
7895*3/1000
7895*3=21000+2400+270+15=23685
23685/1000=23.685
A company manufactures two types of electrical components A and B. The total revenue from x units of A and y units of B is given by R(x,y)=-5x2-8y2-2xy + 42x+102y, where x and y are in thousands of units. Find the values of x and y to maximize the total revenue.
The values of x and y that maximize the total revenue are approximately 3600 units of A and 3200 units of B.
We are given that;
Function R(x,y)=-5x2-8y2-2xy + 42x+102y
Now,
To maximize the total revenue from x units of A and y units of B, we need to find the values of x and y that maximize the function R(x,y)=-5x2-8y2-2xy + 42x+102y. This is an optimization problem with two variables.
To solve this problem, we need to find the critical points of R(x,y) by taking partial derivatives with respect to x and y and setting them equal to zero.
R_x = -10x - 2y + 42 = 0
R_y = -16y - 2x + 102 = 0
Solving these equations simultaneously gives us:
x = 3.6
y = 3.2
Therefore, by the given function the answer will be 3600 units of A and 3200 units of B.
Learn more about function here:
https://brainly.com/question/2253924
#SPJ1
Simplify by writing without the absolute value sign.
|x-5| if x<5
Please help!
when x < 5, we can simplify it as -(x - 5) because (x - 5) is negative.
We have,
Absolute value:
The absolute value of a number represents its distance from zero on the number line. It is always a non-negative value.
For example, the absolute value of 3 is 3, and the absolute value of -3 is also 3.
|x - 5|:
In this expression, we have the absolute value of the quantity (x - 5).
It means that we are looking at the distance between x and 5 on the number line.
x < 5:
The condition x < 5 states that x is less than 5.
It means that x is located to the left of 5 on the number line.
Simplification:
When x is less than 5, it implies that x is located to the left of 5.
In this case,
The quantity (x - 5) becomes negative because we are subtracting a larger value (5) from a smaller value (x).
Now,
The expression |x - 5| can be simplified to -(x - 5), which means taking the negation of (x - 5).
- If x = 3, which is less than 5, we can substitute it into the expression:
|x - 5| = |3 - 5| = |-2| = 2
- If x = 7, which is greater than 5:
|x - 5| = |7 - 5| = |2| = 2
In both cases,
The value of |x - 5| is 2.
However, when x < 5, we can simplify it as -(x - 5) because (x - 5) is negative.
Thus,
when x < 5, we can simplify it as -(x - 5) because (x - 5) is negative.
Learn more about expression here:
https://brainly.com/question/20383699
#SPJ1
10+5³ −1= ?
Evalúa la siguiente expresión.
Answer:
10+5×5×5 -1
10+125 -1
135 -1
= 134
5. Priest and Sons, is a local manufacturer of a product that sells for $13.50 per unit. Variable costper unit is $7.85 and fixed cost per period is $1 220. Capacity per period is 1100 units. Perform a break-even analysis showing an algebraic statement of:
a. the revenue function
b. the cost function
c. calculate the break-even point in units
The break-even point is approximately 217 units.
We are given that;
Cost of local product= $13.50
Variable cost per unit= $7.85
Fixed cost per period= $1
Now,
The revenue function is the product of the price per unit and the number of units sold:
R(x)=13.50x
where x is the number of units sold.
The cost function is the sum of the fixed cost and the variable cost per unit multiplied by the number of units sold:
C(x)=1220+7.85x
where x is the number of units sold.
The break-even point is the point at which revenue equals cost. We can find this point by setting R(x) equal to C(x) and solving for x:
13.50x=1220+7.85x
5.65x=1220
x≈216.81
Therefore, by the function the answer will be 217 units.
Learn more about function here:
https://brainly.com/question/2253924
#SPJ1
What is formula to find perimeter of trapezoidal prism?
Answer:
7 duckpin utuyuuuu I have no idea where to watch the video is not a good day at work now and
Max has a bowl of 30 grapes of which 60% of which are red grapes
Find the missing angle of arc:
W
88°
●
?
X
176° is the measurement of the angle asked.
From the Theorem,
An angle at the circumference of a circle is half the angle at the center subtended by the same arc.
The desired angle will be equal to twice the angle WYX
Thus,
Angle made by the arc = 2 * 88
Angle made by the arc = 176°
Learn more about the chord theorem here:
https://brainly.com/question/15298662
#SPJ1
Given the formula for the perimeter of a rectangle where I represents the length and w represents the width.
2(l+w)
What does the 2 represent in this formula?
-))
A)
B)
C)
D)
The 2 represents the perimeter.
↓y
The 2 represents the two width pairs.
The 2 represents the two length pairs.
The 2 represents the two sets of length and width pairs.
Eliminate
Ans
The correct answer is (D) "The 2 represents the two sets of length and width pairs."
In the formula for the perimeter of a rectangle, 2(l+w), the 2 represents the fact that the formula is calculating the sum of two pairs of sides: the length and the width. Each pair consists of two sides, so there are two sets of pairs that need to be added together to get the total perimeter.
Therefore, the 2 represents the two sets of length and width pairs.wer:
I need a lot of help on this. I really appreciate it!
Answer:
0
Step-by-step explanation:
the range is the 'possible numbers' that the graph can take in relation to the y-axis.
this graph is a -Bx² graph (B is just any number, -x² since it's an x² graph upturned). the graph does not go any higher than 1 in the y-axis direction. so, 0 is the answer.
ps the range of this graph will be y ≤ 1
the radius of a circle is 10 feet. what is the circumference Give the exact answer in simplest form
Answer: 62.83
Step-by-step explanation:
The formula for the circumference of a circle is C = 2 π r
So, let’s set up our equation.
2 •π •10 (your radius is 10!)
Now just multiply it together.
2 • π • 10 = 62.83 ft^squared
Hopefully this is what you were looking for. :)
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
mentum. All rights reserved.
The slope of a line is positive with a value of 3/2 or 1.5.
What is the slope of the line?The slope of the line is the ratio of the rise to the run, or rise divided by the run.
The slope of a line is used to describe the steepness and direction of the line.
Mathematically, the formula for the slope of a line is given as;
slope = Δy / Δx
where;
Δy is the change in the y valuesΔx is the change in x valuesThe slope equation is expanded as follows;
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
From the graph, the values of x and y is determined as;
( x₁, y₁ ) = ( - 2, 0 )
( x₂, y₂) = ( 0, 3 )
The slope of the line is calculated as follows;
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
m = ( 3 - 0 ) / ( 0 - - 2)
m = 3 / 2
m = 1.5
Thus, the line has a positive slope.
Learn more about slopes here: https://brainly.com/question/3493733
#SPJ1
The complete question is below:
What is the slope of the line? type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
can i get help with this finding volume
Answer:
[tex]\huge\boxed{\sf 148\ in\³}[/tex]
Step-by-step explanation:
Formula to be used:Volume of cuboid = length × width × height
Solution:Volume of smaller box:= length × width × height
= 8 × 4 × 2
= 64 in³
Total volume:= Volume of larger box + Volume of smaller box
= 212 in³
Volume of larger box:= Total volume - Smaller box
= 212 - 64
= 148 in³[tex]\rule[225]{225}{2}[/tex]
1. Which shape does not belong? Find as many reasons for each shape why it does not belong. Triangle, diamond, rectangle, pentagon
Triangle:
It might not belong because it does not have any parallel sides, unlike the other shapes.
Diamond:
It might not belong because it is the only shape that is not a quadrilateral.
Rectangle:
It might not belong because it is the only shape with opposite sides that are equal in length.
Pentagon:
It might not belong because it is the only shape that does not have any right angles.
To determine which shape does not belong among the triangle, diamond, rectangle, and pentagon, we can analyze each shape and identify reasons why it may not belong in comparison to the others.
Here are some possible reasons for each shape:
Triangle:
It could be the odd one out because it is the only shape with three sides.
It might not belong because it does not have any parallel sides, unlike the other shapes.
Diamond:
It could be the odd one out because it is the only shape that is not a polygon (since it does not have straight sides).
Rectangle:
It could be the odd one out because it is the only shape with four right angles.
Pentagon:
It could be the odd one out because it is the only shape with five sides.
It might not belong because it is the only shape that does not have any right angles.
The determination of which shape does not belong ultimately depends on the specific criteria or rules set for the given set of shapes.
Without further context or specific criteria, it is difficult to definitively say which shape does not belong.
For similar questions on shape
https://brainly.com/question/28008161
#SPJ11
How to get the answer to this problem and explain how you got it so I can understand
well, let's notice that A F, B G and C E all converge at point D, without much fuss, that simply means they're all medians, because all medians in a triangle meet at the centroid.
ahmed throws a ball to john. The ball travels 10m in x m/s.
a) write an expression in terms of x for the time taken for the ball to reach john
john throws the ball to pierre over a distanxce of 15m in 0.5 m/s less than the timw taken for the ball to reach john from ahmed.
b) write an expression in terms of x for the time taken for the ball to go from john to pierre.
the time taken between john catching the ball and then throwing it to pierre is 2 seconds . the total time taken from ahmed to pierre in 7 seconds. write an equation to show that it simplifies to 2x^2-9x-2=0
Answer:
a) The time taken for the ball to reach John is: 10/x seconds.
b) The time taken for the ball to go from John to Pierre is: 15/(x - 0.5) seconds.
c) The equation that shows the total time taken from Ahmed to Pierre simplifies to 2x^2 - 9x - 2 = 0.
Step-by-step explanation:
a) The time taken for the ball to reach John can be calculated using the formula:
time = distance / speed
Since the distance traveled by the ball is 10m and the speed is x m/s, the time taken can be expressed as:
time = 10 / x seconds
b) The time taken for the ball to go from John to Pierre can be expressed as:
time = distance / speed
Since the distance traveled by the ball is 15m and the speed is 0.5 m/s less than the speed at which the ball traveled from Ahmed to John (i.e. x - 0.5 m/s), the time taken can be expressed as:
time = 15 / (x - 0.5) seconds
c) Let's use the information given to write an equation for the total time taken from Ahmed to Pierre. We know that the time taken for the ball to travel from Ahmed to John is 10/x seconds, the time taken for the ball to travel from John to Pierre is 15/(x-0.5) seconds, and the time taken between John catching the ball and throwing it to Pierre is 2 seconds. Therefore, the total time taken can be expressed as:
10/x + 15/(x-0.5) + 2 = 7
Multiplying both sides by x(x-0.5) to get rid of the denominators, we get:
10(x-0.5) + 15x + 2x(x-0.5) = 7x(x-0.5)
Simplifying and rearranging, we get:
2x^2 - 9x - 2 = 0
Therefore, the equation simplifies to 2x^2 - 9x - 2 = 0.
(question 8) Find the critical points of the function
Answer:
[tex]\textsf{A.} \quad \dfrac{-3}{2}[/tex]
Step-by-step explanation:
The critical points of a function are the points where the derivative of the function is either zero or undefined.
We can find the derivative of the given function using the product rule.
[tex]\boxed{\begin{minipage}{5.5 cm}\underline{Product Rule for Differentiation}\\\\If $y=uv$ then:\\\\$\dfrac{\text{d}y}{\text{d}x}=u\dfrac{\text{d}v}{\text{d}x}+v\dfrac{\text{d}u}{\text{d}x}$\\\end{minipage}}[/tex]
Given function:
[tex]f(x)=(2x+1)e^x[/tex]
[tex]\textsf{Let}\; u=2x+1 \implies \dfrac{\text{d}u}{\text{d}x}=2[/tex]
[tex]\textsf{Let}\; v=e^x \implies \dfrac{\text{d}v}{\text{d}x}=e^x[/tex]
Apply the product rule:
[tex]\begin{aligned}f'(x)&=(2x+1)e^x+e^x(2)\\&=(2x+1)e^x+2e^x\\&=e^x(2x+1+2)\\&=e^x(2x+3)\end{aligned}[/tex]
Set the derivative equal to zero and solve for x:
[tex]\begin{aligned}f'(x)&=0\\e^x(2x+3)&=0\\2x+3&=0\\2x&=-3\\x&=-\dfrac{3}{2}\end{aligned}[/tex]
Therefore, the critical point of the function f(x) is when x = -3/2.