Question

Help me it’s urgent

Answer 1

`a_1 = -(3)/(4)`

Explanation:

`a_1 * r = a_2`

`a_1 * r^2 = a_3`

`a_1 * r^3 = a_4`

...

`a_1 * r^8 = a_9`

`(a_9)/(a_4) = (a_1 * r^8)/(a_1 * r^3) = (-196)/(6)`

`r^5 = -32`

`r = -2`

`a_1 * r^3 = a_4`

`a_1 * (-2)^3 = 6`

`a_1 = (6)/(-8)`

`a_1 = -(3)/(4)`