3 years ago

5. Factor: x² - 4x-21

2 answers:

8 0

Answer:

(x - 7) (x + 3)

Step-by-step explanation:

masha68 [24]3 years ago

5 0

The answer is x² - 25

first you have to subtract the x² - 4x-21. And you get this x² - 25

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Black_prince [1.1K]

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3 years ago

Slav-nsk [51]

Answer:

I thinks its SAS

Step-by-step explanation:

SAS is Two sides and included agale of one triangle congruent to two sides

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3 years ago

wlad13 [49]

the answer is x = 9.

4 0

3 years ago

agasfer [191]

Answer:

508.68

Step-by-step explanation:

Upper and lower surfaces of the cylinder:

$\pi r^{2} =9\pi \\S=2*9\pi =18\pi$

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$S=114\pi +18\pi =162\pi =162*3.14=508.68$

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3 years ago