Multiply and simplify.
? 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Multiply and simplify.(sin x - cos x)(sec x + csc x)
A. cos x - cot x B. tan x - sin x C. tan x - cot x D. cot x + csc x
Mathematics
For the function f whose graph is given, determine the limit.Find
f(x).
A. does not exist B. -2 C. 0 D. -?
Mathematics
Use the given table for y = ax2 + bx + c to solve ax2 + bx + c < 0 or ax2 + bx + c > 0, as indicated.y = -x2 + 5x - 5.25; ax2 + bx + c > 0
A. 1.5 < x < 3.5 B. -3.5 < x < -1.5 C. x < -3.5 or x > -1.5 D. x < 1.5 or x > 3.5
Mathematics
Find the inverse of the matrix, if possible.A = 
A. 
B. 
C. 
D. 
Mathematics