oportela23
16.07.2019 •
Mathematics
You have 52 coins consisting of dimes and nickels the coins total 3.55. how many coins are dimes how many are nickels
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Ответ:
d = # of dimes
d + n = 52 so d = 52 - n
0.10d + 0.05n = 3.55
substitute d = 52 - n into 0.10d + 0.05n = 3.55
0.10d + 0.05n = 3.55
0.10(52 - n) + 0.05n = 3.55
5.2 - 0.10n + 0.05n = 3.55
-0.05n = - 1.65
n = 33 nickels
d = 52 - 33
d = 19 dimes
There are 33 nickels and 19 dimes.
Ответ:
minor arc
152
Major arc
298
Step-by-step explanation: