Question

Which is correct if 52.068881 is rewritten in scientific notation and rounded to three significant figures?Multiple Choice

a.5.21 x 10^-1
b.5.20 x 10^-1
c.5.21 x 10^1
d.5.20 x 10^1
e.5.21 x 10^2

Answer 1

To rewrite the number 52.068881 in scientific notation and round it to three significant figures, we need to move the decimal point to the left until we have a single nonzero digit before the decimal point. Then, we count the total number of decimal places we moved the decimal point and express it as a power of 10.

Step-by-step explanation:

Starting with 52.068881, moving the decimal point one place to the left, we get 5.2068881.

The rounded value to three significant figures would be 5.21.

Expressing this value in scientific notation, we have 5.21 x
`10^1`

Answer: Therefore, the correct option is:

c. 5.21 x
`10^1`