Ajar contains 65 coins, all of which are nickels and dimes. the total value of the coins in the jar is $5.40. how many nickels / dimes are in the jar?

43 dimes, 22 nickels

Step-by-step explanation:

n + d = 65this is just dealing with the total number of coins

0.05n + 0.10d = 5.40this is dealing with the actual $ amount...nickels are worth 0.05 and dimes are worth 0.10

n + d = 65n = 65 - d

now we sub that back into our other equation

0.05(65 - d) + 0.10d = 5.40

3.25 - 0.05d + 0.10d = 5.40

-0.05d + 0.10d = 5.40 - 3.25

0.05d = 2.15

d = 2.15 / 0.05

d = 43 < 43 dimes

n + d = 65

n + 43 = 65

n = 65 - 43

n = 22 <=== 22 nickels

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (

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