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Blababa [14]
3 years ago
5

Seraphina is driving two hours to visit her family. For the first hour, she traveled at a speed of 60 miles per hour. Then, in t

he second hour, she traveled at a speed of 65 miles per hour. What is the percentage increase of Seraphina's speed? If necessary, round to the nearest tenth of a percent
Mathematics
1 answer:
Gnom [1K]3 years ago
7 0

Answer:

There was a %5 increase

Step-by-step explanation:

You just have to substract 65-60 and you get 5

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Answer:

d

Step-by-step explanation:

Solution by substitution method

y=7x+8

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and y=x+20

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Suppose,

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and -x+y=20→(2)

Taking equation (1), we have

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Putting y=7x+8 in equation (2), we get

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