Find the value of the determinant.
A. -33
B. -12
C. 57
D. 33
Answer: A
Mathematics
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Solve.(x - 3)(x + 6) < 0
A. (-6, -?) B. (-6, 3) C. (-?, 3) D. (-3, 6)
Mathematics
Solve the problem.The spring of a spring balance is 7.0 in. long when there is no weight on the balance, and it is 9.4 in. long with 9.0 lb hung from the balance. How much work is done in stretching it from 7.0 in. to a length of 10.6 in.?
A. 120 lb?in. B. 24 lb?in. C. 1.7 lb?in. D. 6.8 lb?in.
Mathematics
Find all real numbers that satisfy the equation.7 cos x + 5
= 5 cos + 4
A. x = 
+ 2n? or x = 
+ 2n?
B. x = 
+ n? or x = 
+ n?
C. x = 
+ 2n? or x = 
+ 2n?
D. x = 
+ n? or x = 
+ n?
Mathematics
Subtract.3 - (-11)
A. 14 B. -8 C. 8 D. -14
Mathematics