Find the inverse of the matrix. 
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Perform the indicated operation.43 + (-70)
A. 27 B. -27 C. 113 D. -113
Mathematics
Find the slope of the polar curve at the indicated point.r = 7(1 + cos?), ? = 
A. -1
B. 
C. 6
D. -2
Mathematics
Provide an appropriate response.Find the length of X in this truss design. 
A. 8.4 ft B. 9.8 ft C. 6.9 ft D. 17.1 ft
Mathematics
Find all solutions of the equation in the interval [0, 2?).2 sin2 ? - 3 sin ? - 2 = 0
A. 
, 
B. 
, 
C. 
, 
, 
D. 
, 
, 
Mathematics