What is the value of x if 5^x+2 =5^9
A. X=-11
B. X=-7
C. X=7
D. X= 11

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex

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

In the diagram below,abc is congruent to dec what is the value of x