Find the inverse of the matrix (if it exists).A = 
A. A-1 = 
B. A-1 = 
C. A-1 = 
D. A-1 = 
Answer: B
Mathematics
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Find the number of terms in the arithmetic sequence.7, 3, -1, . . . , -53
A. 15 B. 16 C. 14 D. 17
Mathematics
Solve.In a practice run, a race car driver's speed is clocked at 135.875 mph at the end of her first lap, and at 175.059 mph at the end of the next lap. How much faster was she driving at the end of the second lap?
A. 39.084 mph B. 39.194 mph C. 39.184 mph D. 40.184 mph
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. 
D. 
y
Mathematics
Answer the question.The monomial 49x2y14 is a perfect square.True or False?
A. False. B. True.
Mathematics