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Vanyuwa [196]
3 years ago
8

PLEASE ANSWER AND EXPLAIN I’LL MARK BRAINLIEST

Mathematics
1 answer:
ale4655 [162]3 years ago
3 0

Answer/Step-by-step explanation:

a. x(x - 3) + 2(x - 3)

x*x + x*-3 + 2x + 2*-3 (distributive property)

x² - 3x + 2x - 6

Add like terms

x² - x - 6

b. 2x(x - 4) -3(x - 4)

2x*x + 2x*-4 -3*x -3*-4 (distributive property)

2x² - 8x - 3x + 12

Add like terms

2x² - 11x + 12

c. x(x - 2) + 2(x - 2)

x*x + x*-2 + 2*x + 2*-2 (distributive property)

x² - 2x + 2x - 4

Add like terms

x² - 0 - 4

x² - 4

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A hemispherical tank is filled with water and has a diameter of 14 feet. If water
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Answer:

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Step-by-step explanation:

Given that,

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We need to find the total weight of the water in a full tank to the nearest pound.

The volume of the hemisphere is given by :

V=\dfrac{2}{3}\pi r^3\\\\V=\dfrac{2}{3}\pi \times (7)^3\\\\V=718.377\ \text{feet}^3

If water weighs 62.4 pounds per cubic foot, it means

V=718.377\times 62.4\\\\V=44,826.72\ \text{pounds}

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