3 years ago

Please help! Worth 10 points!

2 answers:

7 0

The answer is 140.

Normally, when finding the percentage of a number, you would divide the number by the percentage. But since this is the opposite, finding the original number, you would multiply the percentage by the final number.

14 · 10 = 140

bonufazy [111]3 years ago

6 0

10% of 140 is 14.
to solve you first must do 10/100 = 14/x
cross multiply and you get 10x = 1400
divide 1400 by 10 and you get 140

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3 years ago

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6 x 10^-2 is how many times a large as 2 x 10^-8?

Diano4ka-milaya [45]

Answer:

the number $6\,\,\,10^{-2}$ is three million times larger than $2\,\,\,10^{-8}$

Step-by-step explanation:

To answer this, just do the quotient of the first one over the second one, and use the rules for quotient of exponential expressions of the same base:

$\frac{6\,\,\,10^{-2}}{2\,\,\,10^{-8}} =\frac{6}{2} \,\frac{10^{-2}}{10^{-8}} =3\,\,\,10^{-2+8}=3\,\,\,10^6=3000000$