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OpenStudy (jkbo):
Please help Which determinant has a value of 30? a.det [3 1] [3 9] b.det [3 1] [-3 9] c.det [3 -1] [-3 9] d.det [3 -1] [3 -9]
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OpenStudy (bahrom7893):
Do you know how to find the determinant?
OpenStudy (jkbo):
Yes 3x3-9x1 but its always 0
OpenStudy (bahrom7893):
3*9-3*1 = 27-3 = 24 Not always 0
OpenStudy (bahrom7893):
What's 3*9 - (-3)*1?
OpenStudy (jkbo):
30
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OpenStudy (anonymous):
b.det [3 1] [-3 9]
OpenStudy (jkbo):
thank you both
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