Solve the problem.Find the value of k so that the following expression will be a perfect square trinomial. kx2 + 56x + 16
A. -7
B. 4
C. 49
D. 7
Answer: C
Mathematics
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Complete.73 mph = 
km/h (Round to the nearest thousandth.)
A. 132.057 B. 117.457 C. 40.556 D. 45.370
Mathematics
Graph the function on the indicated interval.y = 
cos (?x), 0 ? x ? 4 
A. 
B. 
C. 
D. 
Mathematics
Combine like terms.-8z - (-3z)
A. -11z B. -5z C. 5z D. -5z2
Mathematics
Perform the indicated operation. Simplify if possible.
+ 
A. 
B. 
C. 
D. 
Mathematics