9. If a train travels 270 mi. in 9 hr., what is its average speed?
2 answers:
Answer:
30 miles per hour
Step-by-step explanation:
You divide the distance by time to receive the average speed.
270 / 9 = 30
Answer:
The train travels 30 miles in 1 hour
Step-by-step explanation:
First, you take the miles and divided it by the hours. That will give you the average speed/MPH (miles per hour)
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It's the 2,7,3,2 one or the third one
Answer:
x=11, y=10
Step-by-step explanation:
x= 6+ (1/2)y
x+y=21
substitute the first equation into the second equation:
(6+ (1/2y)) + y =21
to get:
y=10
then to find x:
x+ 10 = 21
x=11
