Question

help!

Answer 1

In an average year America is responsible for about 20,000 kilograms of carbon emission pollution each year. Express this number as a single-digit integer times a power of 10.

Answer 2

place a decimal point between the first two digits

so we have `2.0`

Answer 3

how many places must we move the decimal point to go from `2.0` to `20,000` ?

Answer 4

4?

Answer 5

yes, we move the decimal point \(\LARGE \color{red}{4}\) spots to the right, so the exponent over the 10 is \(\LARGE \color{red}{4}\)

meaning that

\[\LARGE 20,000 = 2.0 \times 10^{\color{red}{4}}\]

Answer 6

if we move the decimal point to the left, then the exponent would have been negative

Answer 7

so the answer is 10^4?

Answer 8

I just showed you the answer

Answer 9

1.0 x 10^4