Solve the problem.An experimental model for a suspension bridge is built. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers stand 80 inches apart. At a point between the towers and 28 inches along the road from the base of one tower, the cable is 1.44 inches above the roadway. Find the height of the towers.

A. 18 in.
B. 15.5 in.
C. 16.5 in.
D. 16 in.


Answer: D

Mathematics

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Answer each question appropriately.Find the standard equation for the position s of a body moving with a constant acceleration a along a coordinate line. The following properties are known: i.   = a, ii.   = v0 when t = 0, and  iii. s = s0 when t = 0,where t is time, s0 is the initial position, and v0 is the initial velocity.

A. s =  - v0t - s0
B. s =  + s0
C. s =  + v0t + s0
D. s = at2 + v0t + s0

Mathematics

Factor completely.48x2 + 28xy + 4y2

A. 4(3x + y)(4x + y) B. (12x + 4y)(4x + y) C. 4(3x - y)(4x - y) D. (3x + y)(4x + 3y)

Mathematics

Evaluate the function for the given value.f(x) = x; f(-2)

A. -12
B. 36
C.
D. - 

Mathematics

Find the square root if it is a real number. If it is not a real number, state so.

A. 3.464 B. 24 C. 12 D. 6

Mathematics