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