Question

subtract numbers in scientific notation practice
complete this assessment to review what youve learned. it will not count toward your grade.
human hair grows at a rate of about 6.849×10⁻⁴ cm per hour to 2.329×10⁻² cm per hour. the rate depends on gender, genetics, age, and health. find the difference between the high end and the low end of the range. express your answer in scientific notation. do not round your answer. (1 point)
cm per hour
check answer remaining attempts: 3

Explanation:

Step1: Rewrite numbers with same exponent

We rewrite $6.849\times 10^{-4}$ as $0.06849\times 10^{-2}$ so that both numbers have the same exponent of - 2.

Step2: Subtract the coefficients

Subtract the coefficients: $(2.329 - 0.06849)\times10^{-2}$.
$2.329-0.06849 = 2.26051$.

Step3: Write the result in scientific - notation

The result is $2.26051\times 10^{-2}$ cm per hour.

Answer:

$2.26051\times 10^{-2}$