Question

Check my answer please

Answer 1

Don't think so. The common ratio is -2.

Answer 2

none of them are correct
common ratio = -10 according to the question.

Answer 3

Common ratio is any term divided by the term immediately preceding it.\[\frac{ -10 }{ 5 } = -2\]

Answer 4

oh sorry I misread the question The second term is -10.!!!

Answer 5

as ospreytriple has said the common ratio r can be found by second term / first term
= -10 / 5

Answer 6

In general,\[a_n = a_1\left( r \right)^{n-1}\]For the first term (n=1) you would get\[a_1=a_1\left( r \right)^{1-1} = a_1\]In your question, \(a_1 = 5\) and \(r = -2\)

Answer 7

hint: first term is when n = 1

Answer 8

Well, if you think the answer is B, try n=0 and see what you get.

Answer 9

Correct.

Answer 10

its A

Answer 11

Thank you

Answer 12

You're welcome