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Ivenika [448]
2 years ago
9

The variable x and y vary directly. Write an equation that relates x and y. Then find y when x = 12.

Mathematics
1 answer:
EastWind [94]2 years ago
5 0

Answer:

24

Step-by-step explanation:

   y=kx

at (4, 8):  8 = 4k  ⇒  k = 2

So  y=2x

when x=12, y=2 \times 12=24

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3 years ago
Please help me on this <br> U need to zoom in
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Not sure if you can do this but it sounds like a velocity/time/distance equation.
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15 pages - 350 w/p

She can type 70 words per minute (w/m). There are 350 words per page (w/p). She needs 15 pages. So first you have to find how many words she can type in one hour. 60 minutes in an hour, she can type 70 w/p.

60x70=4,200 words per hour (w/h).

Next you should find out how many words on 15 pages total.
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I would put 4,200/5,250 as a fraction to gage how much she has left. She has most of it done already in ONE HOUR. Reduced, she has done 4/5s of the essay. Now you just need to get 1/5 of 5250, which is 1050.

She needs to do 1050 words. If one minute is 70, do 1050/70 which is 15.

The answer is 1 hour and 15 minutes.

I think... ;)
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