Answer:
(7 , 7.75)
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
45n=540
45/45=540/45
n=12
Answer: He is idle for 8.4 hours.
Step-by-step explanation:
Since we have given that
Number of hours he repairs =30 hours
Percentage of hours he worked = 72%
Remaining percentage of hours he remains idle is given by

So, Number of hours he is idle for a driving is given by

Hence, he is idle for 8.4 hours.
Answer:
40 miles
Step-by-step explanation:
At this rate, it travels 80 miles per 2 hours, or 40 miles per 1 hour.
The train's travels 40 miles per hour.
Answer:
D. 5
Step-by-step explanation:
Based on the midsegment theorem of a trapezoid, thus:
QR = ½(OP + MN)
Substitute
27 = ½((5x - 7) + (6x + 6))
27 = ½(5x - 7 + 6x + 6)
Add like terms
27 = ½(11x - 1)
Multiply both sides by 2
2*27 = 11x - 1
54 = 11x - 1
54 + 1 = 11x
55 = 11x
55/11 = x
5 = x
x = 5