on two investments totaling $11,500, Jessica lost 3% on one and earned 7% on the other. If her net annual receipts were $196, how was each investment? ...use the variables x and y to set up a system of equations
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OpenStudy (anonymous):
@Hero ?
OpenStudy (anonymous):
@hartnn ?
OpenStudy (anonymous):
@jim_thompson5910 ?
OpenStudy (anonymous):
@satellite73 I really need help with this..anyone?
OpenStudy (anonymous):
we can do this i am sure
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OpenStudy (anonymous):
i don't know how to set it up in system of equations
OpenStudy (anonymous):
but i can solve it perfectly fine
OpenStudy (anonymous):
it says to use two equation (which is not really necessary) but we can do it
if \(x\) is the amount of the investment that lost 3% and y is the investment that gained 7% then one equation is
\[x+y=11,500\]
OpenStudy (anonymous):
the other would be
\[-.03x+.07y=196\]
OpenStudy (anonymous):
solve the "system"
\[x+y=11,500\\
-.03x+.07y=196\] which might be easier if you multiplied the second one by 100 and had
\[x+y=11500\\
-3x+7t=19,600\]
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