Find A-1, if it exists.A = 
A. 
B. 
C. Does not exist
D. 
Answer: A
Mathematics
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Simplify the expression.y-6y4
A. 
B. 
C. 
D. y10
Mathematics
Solve the absolute value equation.|2x + 7| + 7 = 12
A. 
B. 
C. 
D. ?
Mathematics
Solve.9x4 - 13x2 + 4 = 0
A. ±1, ± 
B. ± 
C. ± 
D. ±1, ± 
Mathematics
Solve.On a map, the length of a nature-center trail is 6.9 cm. If the scale is 2 cm to 43 km, what is the actual length of the trail?
A. 148.4 km B. 152.4 km C. 149.4 km D. 296.8 km
Mathematics