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OpenStudy (anonymous):
Ms. Lyynch has 21 coins in nickel and dimes. Their total value is $1.65. How much of each coin does she have?
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OpenStudy (anonymous):
x + y = 21 0.05x + 0.1y = 1.65 Can you solve this system of linear equations?
OpenStudy (anonymous):
no
OpenStudy (anonymous):
x + y = 21 x + 2y = 33 Now can you solve it?
OpenStudy (anonymous):
no
OpenStudy (anonymous):
-x - y = -21 x + 2y = 33 ------------- y = 12 Now plug it back in and solve for x.
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OpenStudy (anonymous):
oohh kay thxx
OpenStudy (anonymous):
what is y
OpenStudy (anonymous):
12.
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