Solve.In a track meet, Sean runs 400 meters in 63.3 seconds. What was his average speed in meters per second? (Round to the nearest tenth.)
A. 0.2 m/s
B. 1.6 m/s
C. 6.3 m/s
D. 63.2 m/s
Answer: C
Mathematics
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Plot the points in the Cartesian plane.
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Use the accompanying table to find the solutions to the given equation on 
2 cos2 ? + cos ? - 1 = 0
Y1 = 2(cos(X))2+cos(X)-1
A. 0° B. 120°, 240° C. 60°, 180°, 300° D. None
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Find the midpoint of the line segment whose end points are given.(
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A. (
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C. (- 
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D. (
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Factor the polynomial completely. If the polynomial cannot be factored, say it is prime.343y3 + 1000
A. (7y - 10)(49y2 + 70y + 100) B. (7y + 10)(49y2 + 70y + 100) C. (343y - 10)(y2 + 70y + 100) D. (7y + 10)(49y2 - 70y + 100)
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