ACT Math Practice Question #2089 (Hard (530)) | Test Citadel
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ACT Math Difficulty: Hard (530)

Digital ACT Math Practice Question #2089

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What is the magnitude (length) of the vector v = <9, -40> in the coordinate plane?
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Pythagorean triple (9, 40, 41) -> magnitude is 41.

Masterclass Solution & Distractor Trap Analysis

Magnitude ||v|| = sqrt(x^2 + y^2) = sqrt(9^2 + (-40)^2) = sqrt(81 + 1600) = 41....

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

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