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22 May 2025, 23:43
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
55% (00:35) correct
44% (01:19) wrong based on 9 sessions
History
Date
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✾x is defined as the largest even number that is less than thenegative square root of x. What is the value of ✾81?
A. −82
B. −80
C. −10
D. −8
E. 8
A. −82
B. −80
C. −10
D. −8
E. 8
31 May 2025, 01:49
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OE
Plug in 81 for x, then logically work backward. The negative square root of 81 is -9 because (-9)(-9) = 81. The largest even number that is less than -9 is -10. (The number part of -8 is smaller than the number part of -9; however, you’re dealing with negative numbers, so you have to look for the even number that would be just to the left of -9 along the number line.)
Thus, the correct answer choice is (C) -10.
Plug in 81 for x, then logically work backward. The negative square root of 81 is -9 because (-9)(-9) = 81. The largest even number that is less than -9 is -10. (The number part of -8 is smaller than the number part of -9; however, you’re dealing with negative numbers, so you have to look for the even number that would be just to the left of -9 along the number line.)
Thus, the correct answer choice is (C) -10.
