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lyudmila [28]
3 years ago
8

A machine made 3 1/2 pencils in 1/6 of a minute. It made pencils at a rate of how many per minute?

Mathematics
1 answer:
nataly862011 [7]3 years ago
8 0
1/6 = 3 1/2
2/6 = 7
3/6 = 10 1/2
4/6 = 14
5/6 = 17 1/2
6/6 = 21

The rate of change is 21

Hope this helps,
QueenBeauty666
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A jar contains n nickels and d dimes. There is a total of 206 coins in the jar. The value of the coins is $13.95. How many nicke
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Answer:

73 dimes and 133 nickels

Step-by-step explanation:

$13.95 = 1395 cents

5n + 10d = 1395     (since each nickel is 5 cents and each dime is 10 cents)

5n = 1395 - 10d      (subtract 10d from both sides to solve for n)

n = 279 - 2d

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279 - d = 206         (add variable d and -2d)

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d = 73          

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