leeannjones1
21.12.2019 •
Mathematics
Diane has $1.85 in dimes and nickels. she has a total of 23 coins. how many of each kind does she have? how many nickles? how many dimes?
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Ответ:
x+y=23 where x is the number of dimes and y is the number of nickles
10x+5y=185
Now you solve by elimination and substitution.
Multiply your first equation by -5 and add the two equations together
-5x-5y=-115
+10x+5y=185
5x=70
x=14
Substitute that into your original equation:
14+y=23
y=9
So you have 14 dimes and 9 nickles.
Hope this helps
Ответ:
Reorder from least to greatest.
4, 4, 6, 6, 6, 8, 10, 15, 15
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Median is the middle number.
This would be 6.
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hope it helps