Find the exact value of the expression.cos (60° + 45°)
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Determine whether the graph of the given equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.y = |4x| + 2
A. No symmetry B. x-axis C. Origin D. y-axis
Mathematics
Perform the indicated operations given the matrices.Let A = 
and B = 
; 2A + 3B
A. 
B. 
C. 
D. 
Mathematics
Find the exact length of the missing side of a right triangle with sides a, b, and c, where c is the hypotenuse.a = 12, b = 16
A. 20 B. 11 C. 19 D. 14
Mathematics
Use the distributive property to find the product.(9p - 1)(81p2 + 9p + 1)
A. 729p3 + 1 B. 729p3 + 90p2 - 1 C. 81p3 - 1 D. 729p3 - 1
Mathematics