Find the midpoint of the line segment joining the points P1 and P2.P1 = (0.8, -0.2); P2 = (2.8, -1.4)
A. (-0.6, 1)
B. (1, -0.6)
C. (1.8, -0.8)
D. (-0.8, 1.8)
Answer: C
Mathematics
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Solve the problem.A deep sea diving bell is being lowered at a constant rate. After 12 minutes, the bell is at a depth of 300 ft. After 50 minutes the bell is at a depth of 1500 ft. What is the average rate of change of depth? Round to one decimal place.
A. 0.03 ft per minute B. 31.6 ft per minute C. 30.0 ft per minute D. 24.0 ft per minute
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Solve the quadratic equation by completing the square.x2 + 18x + 71 = 0
A. x = -18 + 
B. x = 9 + 
C. x = 9 ± 
D. x = -9 ± 
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Simplify.10 ? 7 - 3 ? 4
A. 160 B. 840 C. 58 D. 268
Mathematics