Solve. (x - 7)2 + x2 = (x + 1)2
A. 4, 12
B. -4, -12
C. 7, 12
D. 7, -1
Answer: A
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For the pair of similar triangles, find the length of the indicated side.
In the upper triangle, the shortest side has length 16, and the middle side has length 24. In the lower triangle, the shortest side has length 12, the middle side has length 18, and the longest side has length 24. Find the length, x, of the longest side of the upper triangle.
A. x = 30 B. x = 32 C. x = 24 D. x = 40
Solve the equation.
= 0
A. (-5,?) B. {-5, 5} C. (-?, 5) D. {5}
Write the inequality as the union of two intervals.
?
What will be an ideal response?
Solve the problem.A searchlight is shaped like a paraboloid of revolution. If the light source is located 2 feet from the base along the axis of symmetry and the opening is 8 feet across, how deep should the searchlight be?
A. 8 ft B. 4 ft C. 0.3 ft D. 2 ft