Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Answer: B
Mathematics
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Solve the equation in the interval [0°, 360°). Give solutions to the nearest tenth, if necessary.3 sin2? - sin ? - 4 = 0
A. {180°} B. {90°} C. {0°} D. {270°}
Mathematics
Solve.
+ 5 = x
A. 10 B. 5 C. No solution D. 1, 10
Mathematics
Solve the problem.Mary finds 8 fish at a pet store that she would like to buy, but she can afford only 5 of them. In how many ways can she make her selection? How many ways can she make her selection if he decides that one of the fish is a must?
A. 3360; 420 B. 56; 35 C. 336; 210 D. 6720; 840
Mathematics
State whether the vertex of the function is a maximum or minimum and give the corresponding maximum or minimum value of the function.f(x) = x2 + 20x + 99
A. maximum: -10 B. maximum: 0 C. minimum: -1 D. minimum: -10
Mathematics