Question 9 of 28 Factor the problem completely. a3 - a? - 30
(1 point)
A. a (a + 5) (a - 6)
B. aſa - 5)(a + 6)
a (a? - a - 30)
D. (a + 10)( - 3)
Question 10 of 28
Solve the equation by factoring. (k + 5k + 4)

Opposite angles in a parrellelogram are

Either enter an exact answer in terms of \piπ or use 3.143.14 for \piπ and enter your answer as a decimal.

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g