Find the 9th term of geometric sequence 7,14,28,...

a^9=1792

Step-by-step explanation:

To find a9 we use formula

an = a1 · r

n−1

an = a1 · r

n−1

a9 = 7 · 2

9−1

a9 = 7 · 256

a9 = 1792

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!

1. d.90

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