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2 years ago

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A collection of dimes and quarters has a total value of $3.95. If there are 20 coins in the collection, how many are there of ea

ch kind?

1 answer:

tamaranim1 [39]2 years ago

4 0

Answer:

13 quarters and 7 dimes

Step-by-step explanation:

3 dollars is 12 quarters. add 7 dimes gets you 75 cents then add 1 quarter gets you 20 coins and 3.95

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2 years ago

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Step-by-step explanation:

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In a different dimension, cows have $x+3$ legs, with 3 toes on each leg. Chickens have $2x-4$ legs, with 7 toes on each leg. If

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Answer:

20x-10

Step-by-step explanation:

Cows have $x+3$ legs and 3 toes on each leg, if we want to find the number of toes of ONE cow we have to multiply the legs by the toes giving the following:

$3(x+3) \quad (1)$

But we have two cows so (1) we have to multiply it by 2 giving a total of:

$2(3(x+3))\\6(x+3)\\6x+18 \quad (2)$

By the other hand chickens have $2x-4$ legs and 7 toes on each leg, if we want to find the number of toes we have to multiply the legs by the toes giving the following:

$7(2x-4)\\14x-28 \quad (3)$

To find the total amount of toes we have to add (2) and (3)

$(6x+18)+(14x-28)\\20x-10$

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2 years ago