Answer:15
Step-by-step explanation:
If the two sides equal 30 then you just divide that by 2 and get your answer 15
To solve this problem you need to know the law of cosines.
Answer: D - 15/17
Explanation: it is the only answer that keeps continuing on forever when divided
7). C
8). 60
n = 5(10) + 10
n = 50 + 10
n = 60
9). 17
f(x) = -2x + 7 plug the -5 in for x
f(x) = -2(-5) + 7
= 10 + 7
= 17
10).