Question

Choose the scientific notation that best represents the standard notation given. 6,840,000,000 m 68.4 x 108 m 6.84 x 108 m 6.84 x 10-9 m 6.84 x 109 m

Answer 1

first question its D 6.84 x 10^9 m Second is B 1.43 x 10^-10 g

Step-by-step explanation:

Answer 2

`6.84* 10^9`

EXPLANATION.

To write in scientific notation means , we write in form,

`k* 10^n`

Where n is an integer and

`1\le k\:<\:10`

The given number is,

`6,840,000,000`

We move the decimal point backward to obtain our k, the n here is 9, because we moved backward 9 times.

This implies that,

`6,840,000,000=6.84* 10^9`

The correct answer is D