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stepladder [879]
4 years ago
5

If 5x = 2y and y = 10, what does 7x equal

Mathematics
2 answers:
postnew [5]4 years ago
6 0

Answer:

28 I think

Step-by-step explanation:

ok so you plug in your 10 and so now you have 5x = 2(10) then it's 5x = 20 and then you divide 20 by 5 and get x = 4. then you would multiply 7 by 4 and get 28.

MAXImum [283]4 years ago
5 0

Answer:

28

Step-by-step explanation:

5x= 2×10

X=20/5= 4

7x= 7×4= 28.

Please mark as brainliest.

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<u>We are given:</u>

The time-traveller has 79 books, but he can only take 5 books

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Since we will use combination, ₇₉C₅

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