Traveling at approximately 186,000 miles per second, about how many miles does a beam of light travel in 2 hours?
F. 3.72 x 10^5
G. 2.23 x 10^6
H. 2.67 x 10^7
J. 6.70 x 10^8
K. 1.34 x 10^9
5 answers
well, how many seconds in 2 hours?
There are 7200 seconds in 2 hours. 2 x 60 x 60
so, now you can figure how many miles the light travels in 7200 seconds, right?
7200 x 186000 = 1339200000
what we do next is round 9 units to the left, which leaves us with 1.34. Scientific notation. Final answer is 1.34 x 10^9. K.
what we do next is round 9 units to the left, which leaves us with 1.34. Scientific notation. Final answer is 1.34 x 10^9. K.
what’s the answer
3 answers