Question

Find a1 for the given geometric series.

Sn = 45050, r = 3.8, n = 10

a. 64.27

b. 0.20

c. 0.34

d. 4487.90

Answer 1

Sn=a1(r^n−1)/r−1

Answer 2

Substitute your values into the equation for the sum of a geometric series of n terms and solve for a, the first term.

Answer 3

i dont know how to use that

Answer 4

Now solve for a.

Answer 5

Try.

Answer 6

-6.6

Answer 7

I havent worked it out. Show me your solution.

Answer 8

1

Answer 9

what is 1?