Solve the problem.A rock falls from a tower that is 384 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)?
A. 19.2 s
B. 4.9 s
C. 19.6 s
D. 9,216 s
Answer: B
Mathematics
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Solve the problem.The difference of the squares of two positive consecutive even integers is 108. Find the integers.
A. 26, 28 B. 26, 24 C. 28, 30 D. 24, 22
Mathematics
Solve the equation on the interval 0 ? ? < 2?.4 cos2x - 3 = 0
A. 
B. 
C. 
D. 
Mathematics
Solve the system of equations using matrices.5x - y - 6z = -94x + 9z = 69 7y + z = 68
A. (6, 5, 9) B. (6, 9, 5) C. (-6, 9, 12) D. (-6, 5, 9)
Mathematics
Factor by grouping to obtain the difference of two squares.z2 - x2 + 10xy - 25y2
A. (z + x + 5y)(z - x - 5y) B. (z + x + 5y)(z - x + 5y) C. (z + x - 5y)(z - x + 5y) D. (z + x - 5y)(z - x - 5y)
Mathematics