Question

What is 19.2×108 minutes in hours?

1.152×107 ​h

3.200×109 ​h​

3.200×107 ​h​

1.152×1011 ​h​

Answer 1

`19.2* 10^8\ minutes` in hour is:

`3.200 * 10^7\ h`

Step-by-step explanation:

1 hour=60 minutes

⇒ 1 minute=
`(1)/(60)` hour

⇒
`19.2* 10^8\ minutes=(1)/(60)* 19.2* 10^8\ hour`

⇒
`19.2* 10^8\ minutes=3.200 * 10^7\ hour`

Hence,
`19.2* 10^8\ minutes` in hour is:

`3.200 * 10^7\ h`

Answer 2

The answer is: [C]: " 3.200 * 10⁷ h " .
_________________________________________________
Step-by-step explanation:
________________________________
19.2 * 10⁸ min * (1 hr / 60 min) ;


= (19.2 * 10⁸)
_______________ ;
60

_____________________________
Divide EACH SIDE of the fraction by "10" ; to get:
___________

(19.2 * 10⁷)
_______________ ;
6

______________________________

⇒ (19.2) ÷ (6) = 3.2 ; so rewrite as:
_________________________________________________________

3.2 * 10⁷ ; which corresponds with:

Answer choice: [C]: " 3.200 * 10⁷ h " .
_________________________________________________________