Factor the common factor out of –12 + 15x. a. x(–8 + 5x2) b. 3(–4 + 5x) c. x(–12 + 15x) d. 3x(–4 + 5x)

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step-by-step explanation:

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

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