Solve the equation.(r + 6) = (r + 8)

A. 2
B. -2
C. -1
D. 1


Answer: C

Mathematics

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Solve the problem.An observer to a rocket launch was 800 ft from the take-off position. The observer found the angle of elevation of the rocket as a function of time to be  Therefore, the height h (in ft) of the rocket was  Find the time rate of change of height at 

A. 240 ft/s B. 400 ft/s C. 1100 ft/s D. 6700 ft/s

Mathematics

Determine whether the graph is the graph of a function.

A. yes B. no

Mathematics

Provide an appropriate response.If Z has a standard normal distribution, find P(2.5 ? Z ? 3).

Fill in the blank(s) with the appropriate word(s).

Mathematics

Find an equation for the parabola described.Vertex at (9, 2); focus at (4, 2)

A. (x - 2)2 = 8(y - 2) B. (y - 2)2 = -20(x - 9) C. (x - 2)2 = -8(y - 2) D. (y - 2)2 = 20(x - 9)

Mathematics