Convert 7.2 x 10^-5 from scientific notation into standard notation

720 000

Explanation:

7.2

×

10

5

is already expressed in

standard form

I believe you mean express as

original number

To do this consider

10

5

or more generally

10

n

where n is an integer.

• If n > 0

move decimal point n places to the right

• If n < 0

move decimal point n places to the left

here n = 5 > 0, hence move decimal point 5 places to the right.

⇒

7

∙

2

→

720000

∙

⇒

7.2

×

10

5

=

720

000

Explanation:

the answer is 0.42 is that is an option. this question provides no info