Question

Please help me hurry!! 8

Answer 1

R=7

Explanation I just calculate it

Answer 2

r = 7

Explanation:

`a =5\\\\a_(3)=245\\\\a_(n)=ar^(n-1)\\\\a_(3)= 5*r^(2) \\\\5*r^(2) = 245\\\\r^(2)=(245)/(5)\\\\r^(2)=49 = 7^(2)\\\\r = 7`