Find the union of the sets.{-5, -1, 3, 7} ? {-4, 0, 5, 9}
A. {-1, 0, 3}
B. {0}
C. {-5, -4, -1, 0, 3, 5, 7, 9}
D. ?
Answer: C
Mathematics
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Kent drives his Mazda 270 miles in the same time that Dave drives his Nissan 250 miles. If Kent averages 4 miles per hour faster than Dave, find their rates.
A. 46 mph for Dave and 50 mph for Kent B. 45 mph for Dave and 49 mph for Kent C. 60 mph for Dave and 64 mph for Kent D. 50 mph for Dave and 54 mph for Kent E. 54 mph for Dave and 46 mph for Kent
Mathematics
Find the distance between points P1 and P2.P1(-8, 3, -2) and P2(-7, 4, -1)
A. 2
B. 
C. 3
D. 9
Mathematics
Solve the system by elimination.
A. (18, -4) B. (-4, 18) C. (4, -18) D. (6, -18)
Mathematics
Find the directrices of the hyperbola.x2 - y2 = 16
A. x = ± 
B. x = ± 
C. y = ± 4
D. y = ± 
Mathematics