Find the inverse of the matrix. 
A. 
B. 
C. 
D. No inverse
Answer: B
Mathematics
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Use the even-odd properties to find the exact value of the expression. Do not use a calculator.cos (-60°)
A. 
B. - 
C. - 
D. 
Mathematics
Solve the equation.5x + 9x = -98
A. -7
B. 
C. - 
D. 7
Mathematics
Find an equation of variation for the given situation.y varies directly as x and inversely as z, and y = 12 when x = 2 and z = 8.
A. y = 
B. y = 
C. y = 
D. y = 51xz
Mathematics
Evaluate the expression.0.424 + 5.96 ÷ 0.01
A. 600.24 B. 638.4 C. 60.024 D. 596.424
Mathematics