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In ΔPQR, shown, what is the cos imageR? image


(B) image

(C) image

(D) image

(E) image

The Correct Answer

The lead of a screw is the distance that the screw advances in a straight line when the screw is turned 1 complete turn. If a screw is 2 inches long and has a lead of inch, how many complete turns would get it all the way into a piece of wood?

(A)5 (B)10 (C)15 (D)20 (E)25

Correct Answer: D

In the standard (x,y) coordinate system, circle O has its center at (4,-3) and a radius of 12 units. Which of the following is an equation of the circle?

(A)(x - 4)2 + (y + 3)2 = 12 (B) (x + 4)2 + (y + 3)2 = 12 (C) (x + 4)2 - (y + 3)2 = 12 (D) (x - 4)2 + (y - 3)2 = 144 (E) (x - 4)2 + (y + 3)2 = 144

Correct Answer: E

In the following figure, the regular octagon has a side with a length of 1. What is the area of the shaded region?


(F) (G) (H) (J) (K)

Correct Answer: H

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