the whole exam will be 100%, and let's say that's "x" questions, but we also know that 9 is 60% of that so

The expanded form would be 100.000 +20.000+0.000+.500+.070+.001
Answer:
(-9.5,1,7)
Step-by-step explanation:
Answer:
22 hours (B)
Step-by-step explanation:
John's velocity = 55mph
Sally's velocity = 65mph
John's time taken = x
Sally's time taken = x - 4
since they must cover the same distance.
and, distance = vel × time
Sally's vel × time = John's vel × time
55x = 65(x-4)
55x = 65x - 220
-10x = -220
x = 22 hours.
Therefore, Sally catches up after 22 hours