Question

Find the value of A1 for an infinite geometric series with S = -45 and R=-1/9

Answer 1

Please show YOUR work.

Do you have a formula for such a sum? Maybe: \(S = \dfrac{A_{1}}{1-r}\)?

Please substitute known values and solve for the remaining value.

Answer 2

-45=A1/1+.111111
A1=-45*1+.11111
A1=-44????

Answer 3

tkhunny

Answer 4

-50

Answer 5

Try again.
Please be more careful with your notation

A1/1 - b = (a1/1) - b

You mean A1/(1 - b)

and don't use a calculator. Keep the fractions.

Answer 6

the computer doesnt accept the fractions it tells me to change to decimal

Answer 7

Use a piece of paper. Format the answer as required.

Answer 8

1 + 1/9 = 9/9 + 1/9 = 10/9

You don't need a calculator for that.