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21 Feb 2023, 04:03
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D
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Difficulty:
55%
(hard)
Question Stats:
63% (01:31) correct
37%
(01:38)
wrong
based on 243
sessions
History
Date
Time
Result
Not Attempted Yet
How many distinct solutions does the equation |1 - |x - 215|| = 1 have?
A. None
B. One
C. Two
D. Three
E. Four
A. None
B. One
C. Two
D. Three
E. Four
24 Feb 2023, 01:58
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BusinessAdmin
How many distinct solutions does the equation |1 - |x - 215|| = 1 have?
A. None
B. One
C. Two
D. Three
E. Four
|1 - |x - 215|| = 1:
Case 1:
1 - |x - 215| = 1
|x - 215| = 0
x = 215.
Case 2:
1 - |x - 215| = -1
|x - 215| = 2
x - 215 = 2 or x - 215 = -2
x = 217 or x = 213.
So, x can be 213, 215, and 217.
Answer: D.
Hope it helps.
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