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OpenStudy (anonymous):
find the inverse of the matrix if it exists [3, -1] [-10 ,9] solve the system by using a matrix equation 2x-3y=3 5x-7y=9
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OpenStudy (anonymous):
@Directrix can you help?
OpenStudy (anonymous):
@myininaya
OpenStudy (anonymous):
@Luis_Rivera @RadEn @Zarkon
OpenStudy (raden):
first, determine the determinan of matrix [3, -1] [-10 ,9]
OpenStudy (anonymous):
37
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OpenStudy (raden):
3 * 9 - (-1)(-10) = ...
OpenStudy (anonymous):
oh i thought you added them?
OpenStudy (anonymous):
17 then?
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