Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Multiply.-8x7(-2x5 - 11x4)
A. 104x12 + 104x11 B. 16x12 + 88x11 C. 104x7 D. 16x12 - 11x4
Mathematics
Find the most general antiderivative.
dx
A. -7 cot x + C
B. 
+ C
C. -7 tan x + C
D. 7 cot x + C
Mathematics
Use a calculator to find the acute angle ? (to the nearest tenth of a degree) that satisfies the equation.tan ? = 0.53383945
A. 208.1° B. 331.9° C. 28.1° D. 61.9°
Mathematics
Determine whether there is a maximum or minimum value for the given function, and find that value.f(x) = -x2 - 2x - 9
A. maximum: 8 B. maximum: -8 C. minimum: 8 D. minimum: 0
Mathematics