Question

What is the sum of the geometric sequence 8, -16, 32 . if there are 15 terms?

Answer 1

87384

Answer 2

Please show work

Answer 3

How did you get 87384?

Answer 4

someone, help please!

Answer 5

I'll give you a medal if you help

Answer 6

Do you know what the equation to do the problem is?

Answer 7

The equation is [S(n) = a1(1-r)^{n}/1-r, so 8(1+2^15)/1+2

Answer 8

Then, 8(1+32768)/3 next add the one and then divide and you should get 87384. There you go!

Answer 9

Thanks!