Randomkid0973
07.07.2019 •
Mathematics
Marie has 24 coins in half-dollars and dimes. the total value is $3.60. how many coins of each type are there?
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Ответ:
let x be number of half-dollars and y be number of dimes
total value: 0.5x + 0.1y = 3.60
total amount: x + y = 24
solving this system of equations, we get that x = 3 and y = 21. (a proof of this fact has been left to the reader.) so there are 3 half dollars and 21 dimes.
Ответ:
y=-x+1
Step-by-step explanation: