\((3\cdot 10^{20})(3\cdot 10^{-5})=\)

[Vincen]

\((3\cdot 10^{20})(3\cdot 10^{-5})=\)

A. \(9\cdot 10^{-100}\)

B. \(1\cdot 10^{-4}\)

C. \(9\cdot 10^{-4}\)

D. \(1\cdot 10^{15}\)

E. \(9\cdot 10^{15}\)

Answer: E

Source: Magoosh

[Scott@TargetTestPrep]

\((3\cdot 10^{20})(3\cdot 10^{-5})=\)

A. \(9\cdot 10^{-100}\)

B. \(1\cdot 10^{-4}\)

C. \(9\cdot 10^{-4}\)

D. \(1\cdot 10^{15}\)

E. \(9\cdot 10^{15}\)

Answer: E

Solution:

Simplifying, we have:

(3 x 3) x (10^20 x 10^(-5))

9 x 10^15

Answer: E