Answer:
4*10^18
Step-by-step explanation:
Easier to think of it as the factors out front (8 / 2) = 4
and subtract the exponents 30 - 12 = 18
= 4*10 ^18
Answer:
336
Step-by-step explanation:
not completely sure but I'm pretty sure its 336
Formula for speed = distance/ time
S = 7/.9 = 7.77 miles per hour or 8 mph if you round up.
Answer:
9
Step-by-step explanation:
After 81 passengers get off, only 9 passengers remain on the train of the original 90.