Perform the matrix multiplication.Let A = 
and B = 
. Find AB.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the amplitude, period or displacement.Find the period of y = 2 sin 
.
A. 2
B. 8
C. 
D. ?
Mathematics
Solve the equation.6w = -12
A. w = 18 B. w = -18 C. w = -2 D. w = 1
Mathematics
Solve the formula for the specified variable.M = ?r2hd for r
A. r = 
B. r = 
C. r = ±
D. r = 
Mathematics
Solve the problem.A lumber yard has fixed costs of $1702.80 per day and variable costs of $0.48 per board-foot produced. Lumber sells for $1.58 per board-foot. How many board-feet must be produced and sold daily to break even?
A. 826 board-feet B. 1032 board-feet C. 1548 board-feet D. 3547 board-feet
Mathematics