Question

evaluate each expression. express the result in scientific notation. (4.5 x 10^7)(1.6 x 10^1)

Explanation:

Step1: Multiply the coefficients

$4.5\times1.6 = 7.2$

Step2: Multiply the powers of 10

$10^{7}\times10^{1}=10^{7 + 1}=10^{8}$ (using the rule $a^{m}\times a^{n}=a^{m + n}$)

Step3: Combine the results

$7.2\times10^{8}$

Answer:

$7.2\times10^{8}$