3 years ago

Hi! I have an math exam tomorrow and I really need you guys help.

Mathematics

1 answer:

qaws [65]3 years ago

8 0

I think the answer is 37

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The graph shows the number of hours driven and the number of miles traveled.

Assoli18 [71]

Answer:

x is 4 when y is 180

y is 540 when x is 12

Step-by-step explanation:

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3 years ago

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5. Mark's brother is five years older than Mark.

AleksAgata [21]

Answer:

Step-by-step explanation:

Let's say Mark is M and his brother is B.

M+5=B

M+B=23

Now we can solve using subsitution.

M+M+5=23

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Hope this helped!

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2 years ago

If y varies directly as x, and y=8 when x=3, find y when x=15.

Crank

Answer:

y=40

Step-by-step explanation:

The formula for Direct Variation is y=kx or k=y/x. In this case I would use k=y/x. If you're y is 8 and x is 3, this means that K=8/3. Using this, we know that X=15. We have to find a Y value so that the fraction with an x of 15 simplified is 8/3. To do this you would write 8/3 and y/15. Now cross multiply to get 3y=120. Divide by 3 to get y=40. View my attachment for the work!