Question

Find

(1.6 x 108)(5.8 x 106)
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(4 x 106)
, expressed in scientific notation.
A) 1.05 x 108
B) 2.32 x 108
C) 2.32 x 109
D) 9.28 x 108

Answer 1

I believe the correct answer is B.

Answer 2

(1.6 x 10^8)(5.8 x 10^6)

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(4 x 10^6)

multiply the numbers and add the exponent for the numerator

(1.6 x 5.8) x 10^(8+6)

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(4 x 10^6)

(9.28) x 10^(14)

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(4 x 10^6)

divide the numbers and subtract the exponents for division

(9.28/4) x 10^(14-6)

2.32x 10^(8)

Choice B