Question

Multiply (4.7 x 104) by (6.4 x 1015). Express your answer in scientific notation.

A) 3.008 x 10^20
B) 3.008 x 10^60
C) 3.008 x 10^61
D) 30.08 x 10^19

Answer 1

A) 3.008810^20 hopefully this work

Answer 2

we have

$(4.7*10^{4})*(6.4*10^{15})$

we know that

$(4.7*10^{4})*(6.4*10^{15})=(4.7*6.4)*(10^{4}*10^{15})\\= 30.08*(10^{(15+4)})\\=30.08*10^{19}\\=3.008*10^{20}$

therefore

the answer is

$3.008*10^{20}$