Suppose a 6-ft person wishes to determine the height of a bridge above the bottom of a canyon, as shown in the figure below. To do this, this person stands at one end of the bridge (point A) and looks down to a point directly below the other end (point B). With the help of a companion, point P is determined to form two triangles. Find the distance to the bottom of the canyon, if 
ft and
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__________ ft
Fill in the blank(s) with the appropriate word(s).
48
Mathematics
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?
?
__________ ft
Fill in the blank(s) with the appropriate word(s).
48
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Find the indicated quantities for the appropriate arithmetic sequence.Find the sum of the first 102 positive multiples of 4.
A. 21012 B. 21218 C. 20604 D. 20808
Determine the perimeter of each figure:
a. 
b. 
c. 
d. 
Solve the problem.True or false, a system of linear equations containing the same number of equations as variables always has a unique solution.
A. True B. False
Solve the equation.x2 + 2x - 15 = 0
A. -5, -3 B. -3, 5 C. 3, 5 D. -5, 3