Me !
divide and give the answer in scientific notation:
1.2 x 10^-3
4 x 10^6
(its the top divided by the bottom)
a)
3.0 x 1018
b)
3.0 x 1010
c)
3.0 x 10-10
d)
3.0 x 10-9

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2