Question

Pls, look at the picture for the question.

Answer 1

B. 9*10^16 (because in question give it)


B. 3*10^9 (because answer to first question is divided by seconds in one year (365*24*60*60).

Answer 2

1. 9 * 10^15 meters per years

2. 3*10^8 meters per second

Explanation:

Light travels is given 9,... m per year.

They ask how many meter light trravels per years.

They give you the meter per year so you look at the values and move the decimal and see if it can round to the whole number 9.

Looking at the four next to nine can't round so 9,460,000,000,000 becomes 9 * 10^15 m per year.

Converting meters per year to meter per seconds

`(9*10^5meters)/(1 year) *(1year)/(365 days)*(1 day)/(24 hrs) *(1hr )/(60 min)*(1min)/(60 secs)`

The answer should be 2.8*10^8 or 3*10^8 meters per second