We have seen that isosceles triangles have two sides of equal length. The angles opposite these sides have the same measure. Use this information to find the measure of the requested angle.Find the measure of angle 3.
A. 52°
B. 128°
C. 76°
D. 60°
Answer: C
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Solve the problem.An experimental model for a suspension bridge is built in the shape of a parabolic arch. 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 40 inches apart. At a point between the towers and 14 inches along the road from the base of one tower, the cable is 0.36 inches above the roadway. Find the height of the towers.
A. 3.5 in. B. 4.5 in. C. 4 in. D. 6 in.
Find all square roots of the number.
A. 
, - 
B. 
, - 
C. 
, - 
D. 
, - 
Solve the inequality.
? 1
A. (-?, -10] ? (4, ?) B. (-?, -10] ? [4, ?) C. [-10, ?) D. [-10, 4)
Perform the set of operations, working from left to right.-18 + 20 - (-17) - 6 + 18
A. -67 B. 31 C. 43 D. 9