Question

Medal & fan for first to help
Check my work please (Asap)
The question is
Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88 * 10^12 miles. Suppose a star is 1.23 * 10^2 light-years from Earth. In scientific notation, approximately how many miles is it?
Ok so what I did is I took the number of miles and put it into standard notation and got 58,800,000,000 miles. Then I took the number of number of light years the star is away from earth and put it into scientific notation and got 123 light years

Answer 1

Continued...
Then I multiplied them together and got 7,232,400,000,000 then I rounded it and put it into scientific notation and got 7.23 * 10^12
So is that all right? If not please tell me what I messed up and what I need to do

Answer 2

Yep, that looks correct to me. :)

Answer 3

yea me too

Answer 4

i did the calculation on my calculator i think its right

Answer 5

good work

Answer 6

Thanks guys

Answer 7

Wait now I have a problem its not one of the choices on my quiz...
There is
a. 12.3 * 10^12
b. 7.23 * 10^13
c. 7.23 * 10^14
d. 5.88 * 10^12

Answer 8

What did I do wrong?

Answer 9

58,800,000,000 miles is the miles in one light year, right?

Answer 10

@missMob

Answer 11

That is what I got