Factor: x^2 -9
A. (x − 3)(x-3)
B. (x+3)(x-3)
C. (x – 3)?
D. (x+3)

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Ответ:

jay0630

04.01.2023

Mathematics

224 cubic inches

Step-by-step explanation:

It's a prism.

The formula of a volume of a prism:

V=BH

B - area of a base

H - height

We have a triangle in the base.

The formula of an area of a triangle:

$A=\dfrac{bh}{2}$

b - base

h - height

We have b = 4in, h = 7in.

Substitute:

$B=\dfrac{(4)(7)}{2}=\dfrac{28}{2}=14\ in^2$

Put the value of a base B = 14 in² and the height H = 16 in to the formula of a volume:

$V=(14)(16)=224\ in^3$

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Factor: x^2 -9 A. (x − 3)(x-3) B. (x+3)(x-3) C. (x – 3)? D. (x+3)