ACT Math Practice Question #1416 (Medium (32)) | Test Citadel
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ACT Math Difficulty: Medium (32)

Digital ACT Math Practice Question #1416

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A circle in the standard xy-coordinate plane is given by the equation x^2 + y^2 - 8x + 6y - 11 = 0. What is the radius of this circle?
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r^2 = 11 + 16 + 9 = 36 -> r = 6.

Masterclass Solution & Distractor Trap Analysis

(x-4)^2 + (y+3)^2 = 11 + 16 + 9 = 36. r = sqrt(36) = 6....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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