Round 2,990,000 to the nearest tenth

2,990,000 rounded to the nearest tenth would be 2,990,000.0 because the tenth is the space after the zero and since there is no decimal, the number is the same

8

step-by-step explanation:

just put √(2) * √(32) into a calculator. that will make the answer be 8.

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have