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4vir4ik [10]
3 years ago
15

Can someone help me please

Mathematics
1 answer:
Bumek [7]3 years ago
4 0

Answer:

yes what would u like help with

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 x would equal 24 
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6x-7y= -2 please help me
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Step-by-step explanation:

It will be hard for me to demonstrate the equation

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Ben is taking guitar classes three times a week for 8eeeks each class will last 1 3/4 hours how many hours will Ben have spent i
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Step-by-step explanation:

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Read 2 more answers
A rectangular box has a square base. The combined length of a side of the square base, and the height is 20 in. Let x be the len
aniked [119]

Answer:

a. V = (20-x) x^{2} in^{3}  

b . 1185.185 in^{3}

Step-by-step explanation:

Given that:

  • The height:  20  - x (in )
  • Let x be the length of a side of the base of the box (x>0)

a. Write a polynomial function in factored form modeling the volume V of the box.

As we know that, this is a rectangular box has a square base so the Volume of it is:

V = h *x^{2} in^{3}

<=> V = (20-x) x^{2}  in^{3}

b. What is the maximum possible volume of the box?

To  maximum the volume of it, we need to use first derivative of the volume.

<=> dV / Dx = -3x^{2} + 40x

Let dV / Dx = 0, we have:

-3x^{2} + 40x  = 0

<=> x = 40/3

=>the height h = 20/3

So  the maximum possible volume of the box is:

V = 20/3 * 40/3 *40/3

= 1185.185 in^{3}

7 0
3 years ago
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