Question

(4.2×105)(2.02×10−6) =

Answer 1

6262.2 is your answer

Answer 2

ANSWER

$8.484 \times {10}^{ - 1}$

EXPLANATION

We want to simplify:

$(4.2 \times {10}^{5} )(2.02 \times {10}^{ - 6} )$

This gives us:

$(4.2 \times 2.02 \times {10}^{5} \times {10}^{ - 6})$

Multiply the first two terms to get:

$8.484 \times {10}^{5} \times {10}^{ - 6}$

Use the property of exponents to simplify the last two terms.

Recall that, the bases are the same so we add the exponents.

$(8.484 \times {10}^{ 5 + - 6})$

Simplify to get:

$8.484 \times {10}^{ - 1}$