Question

Find an equation for the nth term of a geometric sequence where the second and fifth terms are -8 and 512, respectively.

The answers are:
a_n = 2 * (-4)^n+1
a_n = 2 * 4^n-1
a_n = 2 * (-4)^n-1
a_n = 2 * 4^n

I picked the first one for the answer. Is that right?

Answer 1

@AnswerMyQuestions @iGreen @mathmath333 help? I just need someone to check it.

Answer 2

@mathstudent55 any help?

Answer 3

@ant501 @gibbs @iambatman @ilovemathbutneedhelp @mathgeek27 @Shadowgirl15 HELP??!!

Answer 4

sure

Answer 5

think it's A @sunshine201

Answer 6

Thank you. Could you check one more? @ant501

Answer 7

sure

Answer 8

A

Answer 9

open study acting up one sec

Answer 10

Find an equation for the nth term of the arithmetic sequence.

a19 = -92, a20 = 6

The anwers are:
a_n = -1856 + 98(n-1)
a_n = -1856 - 98(n-1)
a_n = -1856 - 98(n+1)
a_n = -1856 + 98(n + 1)
I picked A originally but I'm stuck between A and D. Which is it?

Answer 11

I believe it's D

Answer 12

anything else

Answer 13

No that was all I had trouble with. Thank you! <3

Answer 14

your welcome and thanx for the medal

Answer 15

@chosenmatt