Question

Help please?

(3.5×10^−5)(3×10^−10) Express your answer in scientific notation.

1.05×10^−15
1.05×10^−14
1.05×10^−13
1.05×10^15

Answer 1

B . 1.05 x 10^-14
hope i helped

Answer 2

(3.5 x 10^-5)(3 x 10^-10) = (3.5 x 3) x 10^(-5 - 10) = 10.5 x 10^-15 = 1.05 x 10(1 - 15) = 1.05 x 10^-14