Question

round the following measurement the 1 significant figure and put it into standard scientific notation. 15 kg to enter scientific notation use the \e\ form. for example if your answer is 3.45 x 10^5 then enter 3.45e5 (no spaces).

Explanation:

Step1: Round to 1 significant figure

Since 15 has two significant - figures, and we want 1 significant figure. Looking at the first digit 1 and the second digit 5, by the rounding - off rule (if the digit to the right of the significant digit is 5 or greater, we round up), 15 rounds to 20.

Step2: Convert to scientific notation

20 can be written as \(2\times10^{1}\). In the "e" form, it is 2e1.

Answer:

2e1