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dmitriy555 [2]
3 years ago
9

A delivery truck drove 203 miles in 3.5 hours. After unloading and loading new cargo, it traveled on another 243 miles for 4.5 h

ours.
What was the average speed of the truck over its entire route?

Round to the nearest hundredth, if necessary.
Mathematics
2 answers:
AlekseyPX3 years ago
8 0

Answer:

55.75 mi/h

I took the test :)

coldgirl [10]3 years ago
4 0

Answer:

Step-by-step explanation:

203 miles in 3.5 hrs....and 243 miles in 4.5 hrs

totaling : (203 + 243) miles in (3.5 + 4.5) hrs = 446 miles in 8 hrs

speed = distance / time

speed = 446 / 8

speed = 55.75 mph <==

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\dfrac{x+8}x=\dfrac75\\\\(x+8)\cdot5=x\cdot7\\\\5x+40=7x\\^{\quad-40\qquad-40}\\{}\quad5x = 7x-40\\^{\quad-7x\quad-7x}\\-2x=-40\\^{\div(-2)\quad\div(-2)}\\{}\ \ x=20\\\\x+8=28

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