Find the distance d(P1, P2) between the points P1 and P2.
A. 48
B. 48
C. 8
D. 5
Answer: D
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Solve.2x2 + y2 = 35x2 - y2 = 53
A. (2
, -i
), (2
, i
)
B. (-2
, i
), (2
, i
)
C. (-2
, -
), (-2
, 
), (2
, -
), (2
, 
)
D. (-2
, -i
), (-2
, i
), (2
, -i
), (2
, i
)
Replace the polar equation with an equivalent Cartesian equation. r = 20 sin ?
A. y = 20 B. x2 + (y - 10)2 = 100 C. x2 + (y - 20)2 = 100 D. (x - 10)2 + y2 = 100
Solve the problem.Mark and Rachel both work for Smith Landscaping Company. Mark can finish a planting job in 2 hours, while it takes Rachel 3 hours to finish the same job. If Mark and Rachel will work together on the job, and the cost of labor is $35 per hour, what should the labor estimate be? (Round to the nearest cent, if necessary.)
A. $87.50 B. $84.00 C. $29.17 D. $42.00
Solve the given equation for the indicated variable.F = 
C + 32 for C
A. C = 
B. C = 
C. C = 
(F - 32)
D. C = 
(F - 32)