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The endpoints of the diameter of a circle O are A and C. In the standard (x,y) coordinate plane, A is at (4,3) and C is at (-9,-2). What is the y-coordinate of the center of the circle?

(F) -5

(G) -

(H)

(J) 1

(K) 2

The Correct Answer
Explanation

When adding fractions, a useful first step is to find the least common denominator (LCD) of the fractions. What is the LCD for these fractions?

(F) 3 · 5 · 7 · 11 (G) 32 · 52 · 7 · 11 (H) 32 · 52 · · 113 (J) 32 · 52 · 7 · 113 (K) 33 · 53 · 7 · 114

Correct Answer: J

What is the area of the shaded region in the following figure?

(F) 10.5(G) 12.5(H) 18(J) 21(K) 24

Correct Answer: F

What is the value of yx + (2x - 2y) when x = 2 and y = -3?

(A) -10 (B) 1 (C) 7 (D) 16 (E) 19

Correct Answer: E

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