Answer:
a) 75 miles
b) 90 minutes
c) His constant speed was higher for a longer period of time
Step-by-step explanation:
a) 70 / 2 = 35
40 + 35 = 75
b) 60 + 30 = 90
19 would be the first quartile.
Answer:
81 cubic ft. is the answer.
<span>D. the probability that a student has a car or job
</span>
Answer:
<h2>18mins</h2>
Step-by-step explanation:
This problem is on combined work rate
given that
Marta can vacuum the house in 30 min
then her rate= 1/30
Also, her daughter will take 45 min to vacuum the house
her daughter's rate will be = 1/45
then the combined work rate is
1/30+1/45=1/T
30+45/30*45=1/T
75/1350= 1/T
1/18=1/T
This means that they will both take 18 minutes working together to vacum a house
