Question

(2.5 x 10 to the -8 power)x(9 x 10 to the -10 power)

A. 2.25 x 10 to the -18 power
B.2.25 x 10 to the -19 power
C.2.25 x 10 to the -16 power
D.2.25 x 10 to the -17 power
sorry i couldn't write exponents

Answer 1

D.2.25 x 10 to the -17 power