Jay bought 15 tee shirts for $68.40. What was the unit price of the tee shirts?????????????????????????????????????? HELP PLEASE I WILL MARK BRAINLEST

Answers

Answer 1

4.56

Step-by-step explanation:

Hope this helps :)

Answer 2
Final answer:

The unit price of the tee shirts that Jay bought is calculated by dividing the total cost ($68.40) by the number of tee shirts (15), coming to a unit price of $4.56 per tee shirt.

Explanation:

The question is asking for the unit price of the tee shirts that Jay bought. To find the unit price, you'll divide the total price by the number of units (tee shirts) purchased. This is a straightforward division of the total cost by quantity.

So, Jay's total cost is $68.40 for 15 tee shirts. To calculate the unit price:

Divide the total cost ($68.40) by the number of tee shirts (15).The result will be the cost per shirt (unit price).

So, $68.40 / 15 = $4.56.

Therefore, the unit price for the tee shirts that Jay bought is $4.56.

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Related Questions

which term means 1/1000 decimeter, millimeter, kilometer, decameter

Answers

Answer:

millimeter

Step-by-step explanation:

1/1000

A manufacturer of cell phone screens is concerned because 12 percent of the screens manufactured using a previous process were rejected at the final inspection and could not be sold. A new process is introduced that is intended to reduce the proportion of rejected screens. After the process has been in place for several months a random sample of 100 screens is selected and inspection. Of the 100 screens 6 are rejected. What are the appropriate hypotheses to investigate whether the new process reduces the population proportion of screens that will be rejected

Answers

Final answer:

In hypothesis testing for this scenario, the null hypothesis (H-0) is that the proportion of rejected screens remains 12 percent (H-0: p = 0.12). The alternative hypothesis (Ha) is that the proportion of rejected screens is less than 12 percent (Ha: p < 0.12). A sample is taken and a significance test (such as a z-test for proportion) is conducted to decide if the null hypothesis can be rejected.

Explanation:

The question is looking for you to conduct a hypothesis test to investigate whether a new process in manufacturing cell phone screens has led to a reduced proportion of rejected screens. When conducting such a hypothesis test, you'll need to consider a null hypothesis and an alternative hypothesis.

The null hypothesis (H-0) is often the initial claim about a population proportion. In this case, the null hypothesis would be that 12 percent of the screens (0.12) are still being rejected: H-0: p = 0.12.

The alternative hypothesis (Ha) is what you might believe to be true if the null hypothesis is proven to be incorrect. Here, the alternative hypothesis would be that less than 12 percent of screens are being rejected with the new process: Ha: p < 0.12.

To clarify, if the new process is effective, a lower proportion of screens should be rejected. Thus, the hypotheses to be tested are:

H-0: p = 0.12Ha: p < 0.12

Lastly, after selecting the sample, compute the sample proportion. Here a total sample size of 100 screens with only 6 being rejected means the sample proportion (p) = 6/100 = 0.06.

From here, you would proceed to conduct a significance test (possibly a z test for proportion) and determine a p-value to make a decision regarding the null hypothesis.

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write each ratio in simplest form:
3:6
10:5
16:24

Answers

Answer:

1:2

 2:1

2:3

Step-by-step explanation:

3:6

Divide each side by 3

3/3: 6/3       1:2

10:5

Divide each side by 5

10/5 : 5/5      2:1

16:24

Divide each side by 8

16/8: 24/8     2:3

1st 1:2
2nd 2:1
3rd 2:3

Kevin is going to purchase sod for his backyard (see diagram below). How many square feet of sod will Kevin need?

Answers

Answer:

450 square feet

Step-by-step explanation:

Think of the shape as a complete rectangular

The area of the rectangular shape would be 25×30 = 750 square feet

Now find the area of the missing space and subtract it from 750

it would be 15×20 = 300 square feet

750 - 300 = 450 square feet

James has an ice cube tray that makes ice in the shape of spheres rather than cubes. Each sphere of ice has a radius of 22 2 2 cm. One tray makes 66 6 6 spheres.

Answers

Answer:

James has an ice cube tray that makes ice in the shape of spheres rather than cubes. Each sphere of ice has a radius of 2 cm. One tray makes 6 spheres.What is the total volume of ice the tray can make at one time?

Total volume of the tray James have = 201.06 cm^3

Step-by-step explanation:

Given:

Radius of the spherical ice cube = 2 cm

No. of spheres in the ice cube = 6

We have to find the total volume of the ice tray that can make at one time.

Let the total volume be "V".

Formula to be used:

Volume of sphere =  [tex]\frac{4\pi r^3 }{3}[/tex]  cubic unit.

Total volume = [tex]n\times \frac{4\pi r^3 }{3}[/tex] cubic unit.

So,

Total volume of the ice tray (V) :

⇒ [tex]V=n\times \frac{4\pi r^3 }{3}[/tex]

⇒ Plugging n = 6 and r = 2

⇒ [tex]V=6\times \frac{4\pi (2)^3 }{3}[/tex]

⇒ [tex]V=6\times \frac{4\pi (8) }{3}[/tex]

⇒ [tex]V=6\times \frac{32\pi }{3}[/tex]

⇒ [tex]V=\frac{32\times 6\pi }{3}[/tex]

⇒ [tex]V=32\times 2\pi[/tex]

⇒ [tex]V=201.06\ cm^3[/tex]

So,

The total volume of ice the tray can make at one time = 201.06 cm^3

Determine any data values that are missing from the table, assuming that the data represent a linear function.

Answers

Answer:

D

Step-by-step explanation:

4x + 3y = 6
-4x + 2y = 14

solve the system of equations

Answers

Answer:

I believe it is

x = -3/2 (-1.5)

y = 4

Answer:

A) 4x + 3y = 6

B) -4x + 2y = 14

Add the equations

5 y = 20

y = 4

Putting y into A)

A) 4x + 3*4 = 6

A) 4x = -6

x = -1.5

Step-by-step explanation:

If the circumference of a circle is 50. How many inches long is it’s radius?

Answers

Answer:

7.9617

Step-by-step explanation:

r=c/2pi so 50/2(3.14)

Answer: about 7.9617 !

Step-by-step explanation: you to divide 50 by 3.14 to get the diameter, then divide the diameter by 2 to get the radius, then round it!

a scientist has 400ml of a 8% solution. how much water needs to be added to lower it to a 2% solution?

Answers

1200 ml  of water needs to be added to lower it to a 2% solution.

Step-by-step explanation:

Given that,

A scientist has 400ml of a 8% solution.

you need to find how water is required to lower the 400 ml to 2% solution.

Let 'x' be the amount of water added to lower it 2% solution.

The formula is given by,

volume of the liquid × % of solution = volume of the new liquid × new %

This can be denoted in chemical relationship ⇒ c₁v₁=c₂v₂ where c is concentration and v is volume .

Now, to find the total volume of new liquid in ml :

400 ml = v₁

0.08= c₁  

0.02=c₂

v₂=?

400 × 0.08 =v₂ × 0.02

v₂=1600 ml

To find the x value :

Amount to be added = volume of new liquid - volume of liquid before.

⇒ x =1600-400

⇒ x =1200 ml

∴ 1200 ml of water needs to be added to lower it to a 2% solution.

In a city school, 70% of students have blue eyes, 45% have dark hair, and 30% have blue eyes and dark hair. What is the probability (rounded to the nearest whole percent) that a randomly selected student has dark hair, given that the student has blue eyes

Answers

Answer:

The probability that a randomly selected student has dark hair, given that the student has blue eyes is 43%.

Step-by-step explanation:

Conditional probability:

Let A and B any two events connected to a given random experiment E. The conditional probability of the event A on the hypothesis that the event B has occurred, denoted by P(A|B), is defined as

[tex]P(A|B)=\frac{P(A\cap B)}{P(B)}[/tex]

Given that,

In a city school, 70% of students have blue eyes, 45% have dark eyes and 30% have blue eyes and dark hair.

A= students have blue eyes

B= Students have dark hair.

P(A)= 70% [tex]=\frac{70}{100}[/tex] [tex]=\frac7{10}[/tex]

P(B)=45% [tex]=\frac{45}{100}[/tex] [tex]=\frac9{20}[/tex]

P(A∩B)=30%[tex]=\frac{30}{100}[/tex] [tex]=\frac3{10}[/tex]

∴P(B|A)

[tex]=\frac{P(A\cap B)}{P(A)}[/tex]

[tex]=\frac{0.3}{0.7}[/tex]

[tex]=\frac37[/tex]

=0.429

=0.429×100 %

≈43%

The probability that a randomly selected student has dark hair, given that the student has blue eyes is 43%.

What is the slope of the line that contains these points?
x
12
13
14
15
y
-4
2
8
14

Answers

Answer:

6x-76

Step-by-step explanation:

If you graph it out, you'll realize it makes a line that cuts the y-intercept at -76, thus the last value. The slope also has a gradient of 6, thus the coeffecient of x.

Final answer:

The slope of the line through the points given is 6, calculated using the slope formula with the rise over run between the two points.

Explanation:

The slope of a line is calculated by finding the ratio of the vertical change (the rise) to the horizontal change (the run) between two points on the line. Using the coordinates provided (12, -4) and (15, 14), we can apply the slope formula slope (m) = (y_2 - y_1) / (x_2 - x_1). Plugging in the values gives us (14 - (-4)) / (15 - 12) = 18 / 3 = 6. Therefore, the slope of the line that contains these points is 6.

NEED HELP ON THIS WILL GIVE CROWN

Matt buys 14 jars of paint. Each jar contains 300 milliliters of paint.

How many liters of paint in all is there in the jars?


4.2 L

42 L

420 L

4,200 L

Answers

4.2 L.

If you multiply 14 by 300 you will get the total amount of mililiters for all the jars, which is 4,200. There are 1,000 mililiters in a liter, so if you divide 4,200 by 1,000 you get 4.2.

what is the area of a 3in by 3in square

Answers

Final answer:

The area of a 3in by 3in square is calculated by squaring the side length. The area is 9 square inches.

Explanation:

The area of a 3in by 3in square can be calculated by multiplying the length of one side by the length of another side since the sides are equal in a square. In this case, both sides measure 3 inches.

The formula for the area of a square is:

Area = side × side

Applying the formula for our 3in by 3in square:

Area = 3in × 3in = 9 square inches

This straightforward calculation represents how the surface area of a square object changes when the sides of the square are altered. When the sides of a square are scaled down by a fraction, the area changes by the square of that fraction (e.g., scaling down by 3/4 leads to an area that is 9/16 of the original).

NEW YORK
The standard configuration for a New York license
plate is 3 digits followed by 3 letters.
Source: New York State Department of Motor Vehicles
How many different license plates are possible
if digits and letters can be repeated?
234 ABC
O 1757600
1577600
12812904
11232000

Answers

Answer: 10^3 * 26^3 = 17576000

Explain:
We need to count the number of ways that we can make a license plate number that has 3 digits followed by 3 letters.

For a digit, there are 10 possible choices (0,1,2,3,...9).
For a letter there are 26 choices (a,b,c,...,z).

The license plate number has six slots.
The first three slots will have three digits. There are 10*10*10 = 1000 ways to make the first three digits.

The last three slots will have three letters. There are 26*26*26=17576 ways to make the last three letters.

Combine these by multiplying. So there are 17576000 license plates.

The total number of possible New York license plates is 17,576,000.

The number of different license plates possible for a standard configuration in New York, where a license plate is composed of 3 digits followed by 3 letters, can be determined through combinatorial math.

Step-by-Step Solution:

There are 10 possible digits (0-9) and 26 possible letters (A-Z).Since repetitions are allowed, we calculate the total number of combinations for digits and letters separately.The number of ways to choose 3 digits is 10 3 = 10 × 10 × 10 = 1000.The number of ways to choose 3 letters is 26 3 = 26 × 26 × 26 = 17576.Multiplying these two results together gives the total number of possible license plates: 1000 × 17576 = 17576000.

Please can you help me with this question

Answers

it’s -8/24.
you multiple fractions straight across.

The cereal box shown below is a rectangular prism. Find the surface area of the cereal box.

Answers

Answer:

= 1700 :)

Step-by-step explanation:

-multiply all the sides,

-add them,

- then double the answer (or times it  by 2):

1) 30 times 20 = 600

30 times 5= 150

20 times 5 =100

2) Add them:

600+150+100 = 850

then times 850 by 2

850 times 2 = 1700

Hope that helped :)

Answer:

Guys for this one the 30, 20, 5 is 1700

Step-by-step explanation:

Drag and drop a statement or reason to each box to complete the proof. Given: parallelogram EFGH Prove: EG¯¯¯¯¯ bisects HF¯¯¯¯¯¯ and HF¯¯¯¯¯¯ bisects EG¯¯¯¯¯ . Parallelogram E F G H with diagonals E G and H F intersecting at point K. Statement Reason parallelogram EFGH Given EF¯¯¯¯¯∥HG¯¯¯¯¯¯ When two parallel lines are cut by a transversal, alternate interior angles are congruent. The opposite sides of a parallelogram are congruent. △EKF≅△GKH ASA Congruence Postulate CPCTC EG¯¯¯¯¯ bisects HF¯¯¯¯¯¯ and HF¯¯¯¯¯¯ bisects EG¯¯¯¯¯ .

Answers

By proving triangle HKE and triangle GKF congruent, it is proved EG bisects HF and HF bisects EG.

Given that, parallelogram EFGH.

Prove that, EG bisects HF and HF bisects EG.

Parallelogram EFGH with diagonals EG and HF intersecting at point K.

Proof:

Consider, ΔHKE and ΔGKF

∠HKE=∠GKF (Vertically opposite angles are equal)

∠FHE=∠GFH ( Alternate angles between the parallel line EF and HG)

∠GEH=∠FGE ( Alternate angles between the parallel line EF and HG)

By AAA congruency, ΔHKE and ΔGKF are congruent

By CPCT,

KE=GK

JF=HK

So, EG bisects HF and HF bisects EG.

Hence, proved.

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Final answer:

To prove that EG¯¯¯¯¯ bisects HF¯¯¯¯¯¯ and HF¯¯¯¯¯¯ bisects EG¯¯¯¯¯ in parallelogram EFGH, we can use the statements and reasons provided.

Explanation:

To prove that EG¯¯¯¯¯ bisects HF¯¯¯¯¯¯ and HF¯¯¯¯¯¯ bisects EG¯¯¯¯¯ in parallelogram EFGH with diagonals EG and HF intersecting at point K, we can use the following statements and reasons:

Statement: parallelogram EFGH
Reason: GivenStatement: EF¯¯¯¯¯∥HG¯¯¯¯¯¯
Reason: When two parallel lines are cut by a transversal, alternate interior angle are congruent.Statement: The opposite sides of a parallelogram are congruent.
Reason: GivenStatement: △EKF≅△GKH
Reason: ASA Congruence PostulateStatement: CPCTC
Reason: Congruent parts of congruent triangles are congruent (CPCTC)
Conclusion: EG¯¯¯¯¯ bisects HF¯¯¯¯¯¯ and HF¯¯¯¯¯¯ bisects EG¯¯¯¯¯

A scientist estimated that a mixture would need 5 millimeters of a chemical to balance. The actual amount d was 7 millimeters. What was the percent error of the scientists estimation?

Answers

Answer:

29%

Step-by-step explanation:

If 7 is 100% correct then 5 would only be a portion of it

So you need to divide 5 by 7

So 5 divided by 7 is .714 or .71

this means the error was 29%

The score of golfers for a particular course follows a normal distribution that has a mean of 73 and a standard deviation of 3. Suppose a golfer played the course today. Find the probability that her score is at least 74.

Answers

Answer:

0.3694

Step-by-step explanation:

In this question, we are asked to calculate the probability that a golfer scored at least 74 if she played on a particular day.

Given that ,

mean = µ = 73

standard deviation = σ = 3

P(x > 74) = 1 - P(x<74 )

= 1 - P[(x -µ) / σ < (74 -73) /3 ]

= 1 - P(z <0.3333 )

Using z table

= 1 - 0.6305

= 0.3694

probability= 0.3694

Final answer:

To find the probability of a golfer scoring at least 74 on a course with a mean score of 73 and a standard deviation of 3, we calculate the z-score for 74, find the corresponding probability in the z-table, and subtract this from 1 to get the upper tail probability. The probability is approximately 37%.

Explanation:

The score of golfers for a particular course follows a normal distribution that has a mean of 73 and a standard deviation of 3. We want to find the probability that a golfer scores at least 74. This is a question of statistics and specifically involves the concept of the normal distribution and calculating z-scores.

Firstly, we need to calculate the z-score for the score of 74. The z-score is calculated as (X-μ)/σ, where X is the score we are interested, μ is the mean, and σ is the standard deviation. Substituting the given values, (74 - 73) / 3 gives a z-score of approximately 0.33.

Then, to find the probability that a score is at least 74, we need to find the proportion of data to the right of this z-score in a standard normal distribution. This is known as the 'upper tail'. We subtract the z-score from 1 because the total probability under the normal curve is 1. If we look up 0.33 in the z-table, we get a value of 0.6293. Subtracting this value from 1 gives us 0.3707.

Therefore, the probability that a golfer scores at least 74 on this course is approximately 0.37 or 37%.

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A investor has an account with stock from two different companies. Last year her stocking company A was worth $4600 in her stocking company B was worth $1000. Stocking company a has decreased 25% since last year in stock and Company B has decreased 22%. What was the total percentage decrease in the investor stock account round your answer to the nearest 10

Answers

Answer: 24.5%

Step-by-step explanation:

Last year her stock in company A was worth $4600. If her Stock in company A has decreased by 25% since last year in stock, then the amount by which it decreased is

25/100 × 4600 = $1150

The present worth is

4600 - 1150 = $3450

Also, her stock in company B was worth $1000. If her Stock in company B has decreased by 22% since last year in stock, then the amount by which it decreased is

22/100 × 1000 = $220

The present worth is

1000 - 220 = $780

The total worth of both stocks last year was

4600 + 1000 = $5600

The total worth of both stocks this year was

3450 + 780 = $4230

The amount by which it decreased is

5600 - 4230 = 1370

the total percentage decrease in the investor stock account is

1370/5600 × 100 = 24.5%

cost of x articles at 2 dollars each

Answers

Answer:

2x

Step-by-step explanation:

Cost of x articles at 2 dollars each = 2x

Is (1,1) a function?

Answers

Answer:

I don't think it is a function

A function  is a set of ordered pairs where a x-value is paired with only one y-value.

As long if the x-value (1) is sharing only one y-value then it makes it a function.

The hypotenuse of a right triangle is 12, and one of the legs is 4, what’s the missing leg

Answers

Answer:

About 11.31

Step-by-step explanation:

a^2 + b^2 = c^2

4^2 + b^2 = 12^2

16    + b^2 = 144

-16                  -16

b^2 = 128

Take the square root of both sides

b= approximately 11.31

Use the drop-down menus to identify the key values of the box plot. The median is . The minimum is . The maximum is . The lower quartile (Q1) is . The upper quartile (Q3) is .

Answers

Answer:

The median is - C

The minimum is - A

The maximum is - E

The lower quartile (Q1) is - B

The upper quartile (Q3) is - D

The median is C, the minimum is A, the maximum is E, the lower quartile (Q1) is B and the upper quartile (Q3) is D.

What is median?

The value that divides the mathematical numbers or expressions in half is known as the median. The middle data point is known as the median value. Then, organize the data points in ascending order before calculating the median.

As per the given data, whiskers range from A to E.

The middle point of whisker is C.

Hence, the median is given by C.

And the whisker ranges to maximum E.

And range starts from A.

So the minimum is A.

Quartiles are three values that split sorted data into four parts, each with an equal number of observations.

The lower quartile is B and upper quartile is D.

Therefore, the answers of the median is C, the minimum is A, the maximum is E, the lower quartile (Q1) is B and the upper quartile (Q3) is D.

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1. Find g(x), where g(x) is the translation 7 units up of f(x) = x.


2. Find g(x), where g(x) is the translation 5 units left of f(x) = x2.


3. Find g(x), where g(x) is the translation 3 units right and 4 units up of f(x) = x2.


4. Find g(x), where g(x) is the translation 1 unit left and 5 units down of f(x) = |x|.

Answers

Final answer:

Translations of functions involve adjusting the graph horizontally by adding or subtracting values within the function's argument, and vertically by adding or subtracting values directly to the function. For the given functions, respective translations have resulted in g(x) expressions that have been adjusted according to these rules.

Explanation:

To answer the student's mathematics questions about translations of functions, we will apply the concepts learned from algebra to transform each given function accordingly.

Translation 7 units up of f(x) = x results in g(x) = x + 7.For the translation 5 units left of f(x) = x2, we use g(x) = (x + 5)2.The translation 3 units right and 4 units up of f(x) = x2 gives us g(x) = (x - 3)2 + 4.Translation 1 unit left and 5 units down of f(x) = |x| leads to g(x) = |x + 1| - 5.

In these function transformations, we've made use of horizontal and vertical translations, where adding or subtracting values within the function argument adjusts the graph horizontally, and adding or subtracting values outside the function adjusts it vertically.

Mr Tan invested $5000 in an endowment fund for
5 years. The fund pays an interest compounded
yearly. At the end of 5 years, he received a total of
$5800. Find the interest rate.​

Answers

Answer:

Compound Interest Formula Solved For Rate:

log (1 + rate) = {log(total) -log(Principal)} ÷ Years

log (1 + rate) = {log(5,800) -log(5,000)} ÷ 5

log (1 + rate) = [3.7634279936 -3.6989700043] / 5

log (1 + rate) = 0.0644579893  / 5

log (1 + rate) = 0.0128915979

Then we raise 10 to the power of 0.0128915979  which equals

1.0301289629  = 1 + rate

Therefore, rate = .0301289629  and we multiply by 100 to make a percentage:

3.01289629 %

Source: https://1728.org/compint2.htm

https://1728.org/compint.htm

Step-by-step explanation:

Final answer:

Using the compound interest formula and the provided values, the interest rate for Mr Tan's investment is calculated to be approximately 3.02%.

Explanation:

The subject problem belongs to the topic of Compound Interest in mathematics. The formula used for compound interest is A = P (1 + r/n)^(nt), where A represents the total amount received, P represents the principal (initial investment amount), r represents the rate of interest, n represents the number of times interest is compounded per time period, and t represents the time period.

In this problem, Mr Tan's initial investment, P, is $5000. The total amount, A, he received after 5 years is $5800. The interest is compounded annually meaning that n is 1. We rearrange the compound interest formula to solve for the interest rate: r = [(A/P)^(1/nt) - 1]n .

Using Mr Tan's values, the calculation becomes: r = [(5800/5000)^(1/5) - 1]*1. Thus, the interest rate is approximately 0.0302 or 3.02%.

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Metal Fabrication If an open box is made from a tin sheet 10 in. square by cutting out identical squares from each corner and bending up the resulting flaps, determine the dimensions of the largest box that can be made. (Round your answers to two decimal places.)

Answers

Answer:

ength (l) : (10-2*5/3) = 20/3 width(w): (10 - 2*5/3) = 20/3 height(h): 5/3

Step-by-step explanation:

Let x is the side of identical squares

By cutting out identical squares from each corner and bending up the resulting flaps, the dimension are:

length (l) : (10-2x)width(w): (10-2x)height(h): x

The volume will be:

V = (10-2x) (10-2x) x

<=> V = (10x-2[tex]x^{2}[/tex]) (10-2x)

<=> V = 100x -20[tex]x^{2}[/tex] - 20[tex]x^{2}[/tex] + 4[tex]x^{3}[/tex]

<=> V = 4[tex]x^{3}[/tex]  - 40[tex]x^{2}[/tex] + 100x

To determine the dimensions of the largest box that can be made, we need to use the derivative and and set it to zero for the maximum volume

dV/dx = 12[tex]x^{2}[/tex] -80x + 100

<=>  12[tex]x^{2}[/tex] -80x + 100 =0

<=> x = 5 or x= 5/3  

You know 'x' cannot be 5 , because if  we cut 5 inch squares out of the original square, the length and the width will be 0. So we take x = 5/3

=>

length (l) : (10-2*5/3) = 20/3 width(w): (10 - 2*5/3) = 20/3 height(h): 5/3
Final answer:

To determine the dimensions of the largest box that can be made from a tin sheet, we need to find the side length of the square that will be cut out from each corner of the tin sheet. The dimensions of the largest box that can be made are approximately 6.67 inches by 6.67 inches by 1.67 inches.

Explanation:

To determine the dimensions of the largest box that can be made from a tin sheet, we need to find the side length of the square that will be cut out from each corner of the tin sheet. Let's assume the side length of the square to be x inches. The length and width of the resulting box will be 10 - 2x inches and 10 - 2x inches, respectively. The height of the box will be x inches. To find the dimensions of the largest box, we need to find the value of x that maximizes the volume of the box.

The volume of the box is given by V = (10 - 2x)(10 - 2x)(x). We can write this as V = 4x^3 - 40x^2 + 100x. To find the value of x that maximizes the volume, we can take the derivative of V with respect to x and set it equal to 0. Differentiating V, we get dV/dx = 12x^2 - 80x + 100. Setting this equal to 0 and solving for x, we find x = 1.67 inches (rounded to two decimal places). Therefore, the dimensions of the largest box that can be made are approximately 6.67 inches by 6.67 inches by 1.67 inches.

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Solve the system of equations using the substitution method.
-5x − 3y = 16
y = x

Answers

Answer:

-5x - 3x = 16

-8x = 16

x = -2

y = x

Step-by-step explanation:

Answer:

(-2, -2)

Step-by-step explanation:

Make use of the 2nd equation to eliminate x or y in the 1st equation:

-5x - 3(x) = 16

Then -8x = 16, and x = -2.  Since we are told that y = x, y = -2.

The solution is (-2, -2).

Are the expressions equivalent? Use j = 3 and j = 8 to determine if they are. 7(j – 2) 4j – 5 No, because when j = 8, the values of the expressions are different. Yes, because when j = 3, the value of both expressions is 7 and when j = 8, the value of both expressions is 42. Yes, because when j = 3, the value of both expressions is 7. Yes, because when j = 8, the values of the expressions are different.

Answers

Answer:

No, because when j = 8, the values of the expressions are different.

for a shorter answer, A

Step-by-step explanation:

No, because when j = 8, the values of the expressions are different. Therefore, option A is the correct answer.

What is an expression?

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.

The given expression is 7(j-2)4j-5.

Here, j=3 ad j=8

When j=3, we have

7(3-2)4×3-5

= 7×1×4×3-5

= 84-5

= 79

When j=8, we have

7(8-2)4×8-5

= 7×5×4×8-5

= 1115

Therefore, option A is the correct answer.

To learn more about an expression visit;

https://brainly.com/question/28170201.

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What is the midpoint of ?


A: (2p – 2t, r)

B: (t + p, r)

C: (p, r)

D: (p – t, r)

Answers

Final answer:

The midpoint of a line segment is given by the formula ((x₁ + x₂) / 2, (y₁ + y₂) / 2). After applying this formula to the given options, the correct midpoint is (p, r).

Explanation:

The midpoint of a line segment with coordinates (x₁, y₁) and (x₂, y₂) is given by the formula:

Midpoint = ((x₁ + x₂) / 2, (y₁ + y₂) / 2)

Applying this formula to the given options:

A: Midpoint = (2p - 2t, r)B: Midpoint = (t + p, r)C: Midpoint = (p, r)D: Midpoint = (p - t, r)

After substituting the values, we find that the correct answer is Option C: (p, r).

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