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katrin [286]
3 years ago
7

Y=kx and x is doubled what happens to y

Mathematics
1 answer:
timofeeve [1]3 years ago
7 0

Answer:

see explanation

Step-by-step explanation:

Because the quantities are in proportion

When x doubles then y doubles

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Joey has a full 40 coins consisting of only quarters and nickels if the total value is $5.00 how many of each does joey have.
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Q + n = 40....q = 40 - n
0.25q + 0.05n = 5

0.25(40 - n) + 0.05n = 5
10 - 0.25n + 0.05n = 5
-0.25n + 0.05n = 5 - 10
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n = -5 / -0.20
n = 25 <=== 25 nickels

q + n = 40
q + 25 = 40
q = 40 - 25
q = 15 <== 15 quarters
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