Solve.A rock falls from a tower that is 432 ft high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground (h=0)? Round to the nearest tenth.
A. 5.2 sec
B. 11,664 sec
C. 20.8 sec
D. 27 sec
Answer: A
Mathematics
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A. e-x7 + C
B. -7e-x8 + C
C. - 
e-x7 + C
D. - 
e-x8 + C
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Find the value of the constant k so that the function is a probability density function in the indicated interval.
?
What will be an ideal response?
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Solve the problem.An average score of 90 for 5 exams is needed for a final grade of A. John's first 4 exam grades are 79, 89, 97, and 95. Determine the minimum grade John needs on the fifth exam to get an A in the course.
A. 95 B. 85 C. 100 D. 90
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