Question

(4 x 10^-10) (3 x 10^4)

Answer 1

1.2 * 10^-5 or 0.000012

Explanation:

Use commutative property to reorder the terms

Multiply the terms

Multiply the terms with the same base by adding their exponents

Calculate the sum

Write the number in scientific notation

1.2 * 10^-5 or 0.000012

Answer 2

0.000012 (or 1.2 x 10^5)