Question

a person who weighs approximately 120 pounds has 28,000,000,000,000 cells. write the number of cells in scientific notation.
× 10 cells
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Explanation:

Step1: Identify the non - exponential part

The number is 28,000,000,000,000. Move the decimal point to the left until there is only one non - zero digit to the left of the decimal point. We get 2.8.

Step2: Determine the exponent

We moved the decimal point 13 places to the left. So the exponent of 10 is 13.

Answer:

$2.8\times 10^{13}$ cells