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kirill [66]
4 years ago
13

PLEASE HELP SOLVE 63. ASAP!

Mathematics
1 answer:
Veseljchak [2.6K]4 years ago
4 0

Answer:

<h2><em>V(x) =</em> <em>4x³ - 72x² + 308x</em></h2>

Step-by-step explanation:

<em>Look at the picture</em>.

The formula of a volume of a rectangular prism is:

<em>V = lwh</em>

<em>l</em> - length

<em>w</em><em> - width</em>

<em>h</em><em> - height</em>

We have

<em>l = 22 - 2x, w = 14 - 2x, h = x</em>

Substitute:

<em>V = (22 - 2x)(14 - 2x)(x)</em><em>    use FOIL: (a + b)(c + d) = ac + d + bc + bd</em>

<em>V = [(22)(14) + (22)(-2x) + (-2x)(14) + (-2x)(-2x)](x)</em>

<em>V = (308 - 44x - 28x + 4x²)(x)</em>    <em>combine like terms</em>

<em>V = (4x² - 72x + 308)(x)      </em><em>use the distributive property a(b + c) = ab + ac</em>

<em>V = (4x²)(x) + (-72x)(x) + (308)(x)</em>

<em>V = 4x³ - 72x² + 308x</em>

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