Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Answer: A
Mathematics
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Solve the problem.What is the size of the matrix?
A. 2 × 2 B. 2 C. 1 D. 4
Mathematics
Multiply.11x7(-3x7 - 12x6 - 2)
A. -33x14 - 132x13 B. -33x14 - 132x13 - 22x7 C. -33x14 - 12x6 - 2 D. -33x7 - 132x6 - 22
Mathematics
Determine if the given value is a solution to the given equation.9,
= -4
A. Yes B. No
Mathematics
Determine the cube of the expression by writing the expression as the square of an expression multiplied by another expression.(x + 3y)3
A. 3(x + 3y) B. x3 + 27y3 C. x3 + 9x2y + 27xy2 + 27y3 D. x3 + 3x2y + 6xy + 9xy2 + 18y2 + 27y3
Mathematics