Which of the following expressions is written in scientific notation?

dedica66em

dedica66em

Answered question

2021-12-13

Which of the following expressions is written in scientific notation? 4.22×105

Answer & Explanation

kalfswors0m

kalfswors0m

Beginner2021-12-14Added 24 answers

A number is written in scientific notation when the number is written in the form a×10n, where n needs to be an integer and a needs to satisfy the inequality 1a<10.
4.22×105
Comparing the given number with the form a×10n, we determine the values of a and n.
a=4.22
n=-5
We need to verify whether n is an integer and a satisfies the inequality 1a<10.
n=-5 is indeed an integer. Moreover, a=4.22 is a number between 1 and 10 , thus the number is written in scientific notation.
Result:
4.22×105

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