3 years ago

Can someone PLEASE help me with this problem?

Mathematics

1 answer:

Novay_Z [31]3 years ago

5 0

Answer:

3/5 of a foot

Step-by-step explanation:

1/5+2/5=3/5

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Dmitry_Shevchenko [17]

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I need help please for my test

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If 1900 square centimeters of material are available to make a box with a square base and an open top, find the largest possible

Evgen [1.6K]

Answer:

Volume = $7969$ cubic centimeter

Step-by-step explanation:

Let the length of each side of the base of the box be A and the height of the box be H.

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$A^2 + 4*A*H = 1900$

Rearranging the above equation, we get -

$`H = \frac{(1900 - A^2)}{(4*A)}$

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$V = A*A* H$

Substituting the given area we get -

$\frac{A^2*(1900 - A^2)}{4A} = \frac{(1900*A - A^3)}{4}$

For maximum volume

$\frac{dV}{dA} =0$

$\frac{ 1900}{4} - \frac{3*A^2}{4} = 0$

$A^2 = \frac{1900}{3}$

Volume of the box

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3 years ago

Find the value of -(-2x+1)=9-14x

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