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miv72 [106K]
3 years ago
15

Please help,I WILL GIVE BRAINLIEST.

Mathematics
2 answers:
Naya [18.7K]3 years ago
7 0

Answer:

:)

Step-by-step explanation:

artcher [175]3 years ago
6 0

Answer:

During the first half of the race, he walked 3 miles and ran at a rate of 5 miles per hour for x hours.y = 5x + 3

During the second half of the race, he walked for 2 miles and ran at a rate of 5.5 miles per hour for x hours. y = 5.5x + 2

Then using both equations will be:

y = 5x + 3

y = 5.5x + 2

Subtract the equations

0.5x = 1

x = 1/0.5 = 2

Therefore, the value of y will be:

y = 5x + 3 = 5(2) + 3 = 13

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valentina_108 [34]
There are two expressions which do not match with the written descriptions to ist right.

Those are:

1) (4x - 3)^2 - 1: see that the written description does not square the difference of 4x and 3

2) 3(5x^2 + 14x + 7): see that the written description tells that 5 is added to the square ox x, which is not what the expression shows.

The other 4 expressions match with the written descriptions.

So, you can choose those other 4 expressions.
4 0
4 years ago
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sattari [20]
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16 + 4x = 24.

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3 years ago
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Answer:

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Step-by-step explanation:

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I see so many people ask this. What does this mean?
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