All categories

2 years ago

This is the answer ...

Mathematics

1 answer:

Law Incorporation [45]2 years ago

7 0

yea that is right, not sure why it says it's wrong, I'm sorry must be so frustrating

You might be interested in

I built a storage shed in the shape of a rectangular box on a square base. The material that I used for the base cost $4 per squ

kumpel [21]

Answer:

side of 6.124 ft and height of 3.674 ft

Step-by-step explanation:

Let's s be the side of the square base and h be the height of the rectangular box.

The base and the roof would have an area of $s^2$ and cost of

$4s^2 + 2s^2 = 6s^2$

The sides would have an area of 4sh and cost of 4sh*2.5 = 10sh

So the total cost for the material is

$6s^2 + 10sh = 450$

$10sh = 450 - 6s^2$

$h = 45/s - 0.6s$

The volume of the shed has the following formula

$V = s^2h = s^2(45/s - 0.6s) = 45s - 0.6s^3$

To find the maximum value for V, we can take its first derivative, and set it to 0

$\frac{dV}{ds} = 45 - 1.2s^2 = 0$

$1.2s^2 = 45$

$s^2 = 45 / 1.2 = 37.5$

$s = \sqrt{37.5} = 6.124 ft$

h = 45/s - 0.6s = 3.674 ft

4 0

3 years ago

Solve this plz

frozen [14]

A) 9(x + 4) = 27

9x + 36 = 27

9x = 27 - 36

9x = -9

x = -9 ÷ 9

x = -1

B) x/3 - 5 = 6

x/3 = 6 + 5

x/3 = 11

x = 11 × 3

x = 33

C) 15 + 3 ( x -7 ) = -30

15 + 3x - 21 = -30

3x + 15 - 21 = -30

3x - 6 = -30

3x = -30 + 6

3x = -24

x = -24 ÷ 3

x = -8

5 0

3 years ago

Read 2 more answers

What does point B represent on the graph?

fgiga [73]

John earns $14.00 for two hours of work is the correct answer

3 0

3 years ago

Read 2 more answers

What information do you need to know to calculate last year’s winning speed? Remember, the distance traveled (length of the cour

Andrews [41]

Answer:

1. Total distance

2. Shortest time taken

Step-by-step explanation:

Since it is a competition the distance will be the same for all participants.

therefore the information need is

1. The total distance of the competition

2. The time taken by each participant to complete the race

The winning speed is the speed is given as the distance covered in the shortest possible time.

hence the winning speed is expressed as

winning speed= distance/short time taken

8 0

3 years ago

-y^2 =25y+6y^3 find y

jekas [21]

There are 3 y’all in the equation

4 0

3 years ago

Read 2 more answers