Solve.In a practice run, a race car driver's speed is clocked at 145.370 mph at the end of his first lap, and at 173.747 mph at the end of the next lap. How much faster was he driving at the end of the second lap?

A. 28.277 mph
B. 28.377 mph
C. 29.377 mph
D. 28.387 mph


Answer: B

Mathematics

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B.


C.


D.


E.


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Use the appropriate addition formula to find the exact value of the expression.sin 

A.
B. - 
C.
D.

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Solve the problem.The position of a particle moving along a coordinate line is s =  with s in meters and t in seconds. Find the particle's acceleration at 

A. -  m/sec2
B.  m/sec2
C. -  m/sec2
D.  m/sec2

Mathematics

Compare the right-hand and left-hand derivatives to determine whether or not the function is differentiable at the point whose coordinates are given.y = xy = 2x

A. Since limx?0+ f '(x) = -2 while limx?0- f '(x) = -1, f(x) is not differentiable at x = 0. B. Since limx?0+ f '(x) = 2 while limx?0- f '(x) = 1, f(x) is not differentiable at x = 0. C. Since limx?0+ f '(x) = 1 while limx?0- f '(x) = 2, f(x) is not differentiable at x = 0. D. Since limx?0+ f '(x) = 1 while limx?0- f '(x) = 1, f(x) is differentiable at x = 0.

Mathematics