The lowest common multiple of 90 and 150 is 450 .
Answer:
D
Step-by-step explanation:
Let's find unit rate of each (number of miles traveled in 1 hour). For that we will divide the distance by time to get the unit rate.
Note: 
(A)
rate = 
mph (miles per hour)
(B)
rate = 
mph
(C)
rate = 
mph
(D)
rate = 
mph
<u>As we can see, the first 3 rates are same, 75 mph, and the last one is 
mph. So clearly, the last rate is the slowest.</u>
D is the right answer.
Answer:
ratio of hours lisa works to hours lisa sleeps= 3:8
Step-by-step explanation:
lisa goes to school for 7 hours per day lisa works 3 hours per day
Lisa sleeps 8 hours per day.
For the ratio of hours lisa works to hours lisa sleeps
ratio of hours lisa works to hours lisa sleeps= hours Lisa works/hours Lisa sleeps
ratio of hours lisa works to hours lisa sleeps= 3/8
ratio of hours lisa works to hours lisa sleeps= 3:8
