Find the quantity indicated.c varies jointly as a and b. Find k when c = 112, a = 70, and b = 40.
A. k = 
B. k = 
C. k = 25
D. k = 40
Answer: B
Mathematics
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Simplify the radical. Assume that all variables represent positive real numbers.- 
A. 
B. Not a real number
C. 
D. - 
Mathematics
Solve the application.The diagram below shows the side view of a plan for a slanted roof. Find the unknown length in this roof plan. Give an exact answer, then approximate the length to the nearest tenth of a foot.
A. 
ft = 234.0 ft
B. 
ft ? 21.6 ft
C. 
ft ? 5.5 ft
D. 
ft ? 12.7 ft
Mathematics
Tell whether the lines are "parallel", "perpendicular", or "neither."y + 4 = -4x4y = 24x - 2
A. Neither B. Perpendicular C. Parallel
Mathematics
Write the following in interval notation.{x| 8 < x < 9}
A. [8, 9) B. (8, 9) C. (8, 9] D. [8, 9]
Mathematics