A box with a square base and no top is to be built with a volume of 1638416384 in33. Find the dimensions of the box that requires the least amount of material. How much material is required at the minimum

Answers

Answer 1

Answer:

[tex]512\ \text{in}^2[/tex]

Step-by-step explanation:

x = Length and width of base

y = Height of box

Volume of the box is [tex]16384\ \text{in}^3[/tex]

[tex]x^2y=16384\\\Rightarrow y=\dfrac{16384}{x^2}[/tex]

Surface area is given by

[tex]s=x^2+4y\\\Rightarrow s=x^2+4\times \dfrac{16384}{x^2}\\\Rightarrow s=x^2+\dfrac{65536}{x^2}[/tex]

Differentiating with respect to x we get

[tex]s'=2x-\dfrac{131072}{x^3}[/tex]

Equating with 0 we get

[tex]0=2x^4-131072\\\Rightarrow x=(\dfrac{131072}{2})^{\dfrac{1}{4}}\\\Rightarrow x=16[/tex]

[tex]s''=2+\dfrac{393216}{x^4}[/tex]

at [tex]x=16[/tex]

[tex]s''=2+\dfrac{393216}{16^4}=8>0[/tex]

So the function is minimum at x = 16

[tex]y=\dfrac{16384}{x^2}=\dfrac{16384}{16^2}\\\Rightarrow y=64[/tex]

The material required is

[tex]s=x^2+4y=16^2+4\times 64\\\Rightarrow s=512\ \text{in}^2[/tex]

The minimum amount of material required is [tex]512\ \text{in}^2[/tex].


Related Questions

which is a correct step when using the median fit method for modeling data?
Use the median value of intercepts found
Calculate slope using the right and middle points
Determine three y intercepts by using each summary point along with the slope.
Determine the median of the x values and the median of the y values.

Answers

When using the median fit method to model data, you should Determine three y intercepts by using each summary point along with the slope.

What is the median fit method?

This is a model for coming up with trend lines to represent the data given by a data set by dividing the given data into sections where the data points are equal in number.

As there will be three sections, it is important that three y intercepts are determined using summary points and the slope.

Find out more on the median fit method at https://brainly.com/question/23298464.

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Answer: C

Step-by-step explanation:

The equation has a solution of x = 5.



What is the value of k?

k =

Answers

Answer:

K=  -11

Step-by-step explanation:

Mr Goodwin finished grading his students homework at 4:12 PM if he spent an hour and 33 minutes doing this what time did he start

Answers

Answer:

2:21 pm

Step-by-step explanation:

Finished 4:12

He spent 1 hour and 33

4:12 - 1 hour 33

minus the hour

3:12

minus 33

12-33

2:21pm


You want to install a 3 yd wide walk around a circular swimming pool. The diameter of the pool is 16 yd. What is
the area of the walk? Use 3.14 for it.
The area of the walk is approximately

Answers

3d becauvshsbdbbdhdhdhdhd

choose the equation that describes the relationship in the following table. please answer ASAP ty

Answers

Answer:

C) y = -5x + 32

Step-by-step explanation:

Only choice where the all the x values equal the y values

a bowl contains 5 red chips, 7 blue chips, 6 yellow chips, and 10 green chips. One chip is randomly drawn. Write the answer as a fraction in simplest form. Find the probability of choosing a red OR yellow chip.​

Answers

Answer:

The probability is 11/28 or 39%

Step-by-step explanation:

You add 5+6=11 and their are 28 total chips.

Solve the equation:

f÷8=20

Answers

Answer:

f=160

Step-by-step explanation:

all you really need to do is multiply 20 and 8 and you end up with 160

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used. Match each division expression with the correct quotient. (These are the answers)
18x^(2)+39x+15 over 3x+5 -----> 6x+3
35x^(2)-5x-30 over 5x-5 -------> 7x+6
15x^(2)-44x+21 over 5x-3 ------> 3x-7

Answers

can you answer the question that it’s in blue please

Answer:

18x^(2)+39x+15 over 3x+5 -----> 6x+3

35x^(2)-5x-30 over 5x-5 -------> 7x+6

15x^(2)-44x+21 over 5x-3 ------> 3x-7

Step-by-step explanation:

Plato Gang

Will give brainliest

Find the area of the following
triangle:
5 cm
10 cm
A= [?] cm2
Enter the exact answer as a decimal.

Answers

Answer:

25

Step-by-step explanation:

a=1/2bh

a=1/2(5)(10)

a=1/2(50)

a=25

A quality control inspector has drawn a sample of 11 light bulbs from a recent production lot. Suppose 20% of the bulbs in the lot are defective. What is the probability that less than 7, but more than 4 bulbs from the sample are defective

Answers

Answer:

0.04845

Step-by-step explanation:

Probability that less than 7 but more than 4 bulbs from the sample are defective :

P(4 < X < 7) = P(x = 5) + P(x = 6)

Using the binomial probability formula :

P(x =x) = nCx * p^x * (1 - p)^(n - x)

From the question :

p = 0.2 ; 1 - p = 0.8 ; n = 11

P(x =5) = 11C5 * 0.2^5 * 0.8^6 = 0.03876

P(x = 6) = 11C6 * 0.2^6 * 0.8^5 = 0.00969

P(4 < X < 7) = P(x = 5) + P(x = 6)

P(4 < X < 7) = 0.03876 + 0.00969

P(4 < X < 7) = 0.04845

Lydia would like to have cake and pizza at her party the cake will cost $23, each pizza cost $15.00 the total budget for the food at her party is $75 what are the number of pizzas she can get and what is the equation and define your variable

Answers

Answer:

20

Step-by-step explanation:

fw3f2f3sf a

Help quick!!!!!!!!!!!!!!!!!!!

Answers

Step-by-step explanation:

Area of this pi r²/2

3.142*324/2=3.142*162=509,004

Answer:

56.556

Step-by-step explanation:

In order to find the areaof a cirlcle the equation is pi(r^2)

radius is half of a diameter so i did 18 divided by 2 =6

3.142(6^2)=113.112

but since its only half a cirle i divided my answer by 2 in order to get 56.556

Patrick has an art supplies box with colored pencils and markers. The ratio of colored pencils to markers is 7:4. If Patrick has 63 colored pencils in the box, how many markers does he have.

Answers

7•x=63 x=9 4•x=4•9= 36 so he has 36 markers i believe

Find the explicit form of the arithmetic function of p if the first term is 12 and the common difference is 2. Then find the seventh term.​

Answers

Answer:

1st

Step-by-step explanation:

whoever answers it correct first gets brainlest

Answers

Answer:

f(x)=x+1 ok

please mark me as brainlest

PLEASE ANSWER ASAP! NO SCAM LINKS OR REPORTED!

Answers

Answer:

Answer is D!

Step-by-step explanation:

y=-3x-2

Substitute x and y values and check

-3(-2) = 6 - 2 = 4

Hikers spent the following amounts of time (in minutes) to complete a
nature hike: 48, 46, 52, 57, 58, 52, 61, 56.
Suppose another hiker takes 92 minutes to complete the hike.
How does the median and mean change when the new hiker is
factored in to the data?

Answers

Answer:

the mean is 53.75 and median is 54

Step-by-step explanation:

Andrew randomly selects a number from 1-15. What is the probability that the number he selects is an even number?

Answers

Answer:

7/15

Step-by-step explanation:

Probability= Number of even numbers / Total numbers

There are 7 even numbers between 1 and 15

P = 7/15

A cruise ship travels at a constant speed. In 3 hours, the ship travels 72 nautical miles. If the ship continues to travel at the same rate, how far would it travel in 11 hours. (No links) (if it’s wrong I will report and delete) (explain)

Answers

Answer:

264

Step-by-step explanation:

72 divided by 3= 24

24x11=264

PLEASE HELP ILL MAKE BRAINLIEST ASAP

The amount of money in a bank account increased by 18.5% over the last year. If the amount of money at the beginning of the year is represented by n, which expression represents the amount of money in the bank account after the increase? Select all that apply.

A
n + 0.185n

B
n + 18.5n

C
1.185n

D
0.185n

E
18.5n

F
19.5n

Answers

Answer:

A

Step-by-step explanation:

Help please question in the picture

Answers

Answer:

lol no picture attach it please

Step-by-step explanation:

11. If you randomly selected 500 U.S. homes, about
how many would be heated with fuel oil?

Answers

Answer:

50

Step-by-step explanation:

Given

Total number of US houses = 500

If 10% were affected by fuel oil

Total number affected by fuel oil = 10% of 500

Total number affected by fuel oil = 0.1 * 500

Total number affected by fuel oil = 50

Hence 50 houses were affected by fuel oil

(-6, -7) and (3,-4)
Pleaseee helppppppp​

Answers

Answer:

y = x/3 - 5

Step-by-step explanation:

Answer:

y = (1/3)x  - 5 .

Step-by-step explanation:

(-6 , -7) ; (3 ,-4)

Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\[/tex]

          [tex]=\frac{-4-[-7]}{3-[-6]}\\\\= \frac{-4 + 7}{3+6}\\\\= \frac{3}{9}\\\\=\frac{1}{3}[/tex]

m = 1/3   ; (3,-4)

y - y1 = m(x - x1)

[tex]y - [-4]=\frac{1}{3}(x-3)\\\\y + 4 = \frac{1}{3}x-3*\frac{1}{3}\\\\y + 4 = \frac{1}{3}x-1\\\\y =\frac{1}{3}x-1-4\\\\y = \frac{1}{3}x - 5[/tex]

what is the measure of the missing angle?

Answers

115°
A triangle is 180° so add the two degrees given and subtract that from 180; 180-(75+40)
180-155= 65. then a line is 180 degrees so you subtract 65 from 180 and get 115

Whats the answers to this question?

Answers

Answer:

1) e = 6

2) w = 10

3) s = 27

4) t = 4

Step-by-step explanation:

Cross multiplication

A banner measures 5.4 feet long. How long does the banner measure in inches and yards?

Answers

Answer:

64.8 and 1.8

Step-by-step explanation:

The banner measure inches in yards are 64.8 and 1.8.

We have given that,

We have to determine the length does the banner measure in inches and yards.

What is the meaning of inches and yards?

An inch is a unit of length in the British imperial and the United States customary systems of measurement. It is equal to 136 yard or 112 of a foot.

Therefore we get the banner measure inches in yards are 64.8 and 1.8.

To learn more about the length visit:

https://brainly.com/question/2217700

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Im kinda stuck on this can i get help

Answers

Answer:

6+4=10

7-6=1

6*6=36

1/3*6=2

Step-by-step explanation:

Plug in 6 for x and solve it.

Find the mean for the following group of data item 1, 7, 5, 4, 9, 6, 7, 4

Answers

Mean=(1+7+5+4+9+6+7+4)/ 8=43/8=5.375

Answer:

5.375

Step-by-step explanation:

THE TOPIC IS FIND THE CIRCUMFERENCE OF EACH CIRCLE!! 5 AND 8!! .. Help pls this is my first question on here and I need help with this pls. I will give you the brainliest and a thanks!! :)) can u do all three of these? Pls thanks!!!! :))

Answers

Answer:

Circle 1: 37.68 ft

Circle 2: 28.26 cm

Help due today asap Plaese help

Answers

Answer:

A

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

got it right on the test

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