Official Solution:
How many values of \(k\) satisfy \(k*|k| = 4\)?
A. 0
B. 1
C. 2
D. 3
E. 4
Notice that \(k\) cannot be negative because in this case \(k * |k| = (\text{negative})(\text{positive}) = \text{negative} \neq 4\). Therefore, \(k\) must be positive. In this scenario, \(|k| = k\) and we'd have \(k *k = 4\), which gives \(k = 2\) (remember \(k\) is positive so it cannot be \(-2\)). Thus, only one value of \(k\) satisfies \(k * |k| = 4\).
Answer: B
How many values of \(k\) satisfy \(k*|k| = 4\)?
A. 0
B. 1
C. 2
D. 3
E. 4
Notice that \(k\) cannot be negative because in this case \(k * |k| = (\text{negative})(\text{positive}) = \text{negative} \neq 4\). Therefore, \(k\) must be positive. In this scenario, \(|k| = k\) and we'd have \(k *k = 4\), which gives \(k = 2\) (remember \(k\) is positive so it cannot be \(-2\)). Thus, only one value of \(k\) satisfies \(k * |k| = 4\).
Answer: B
Statistics : Posted by Bunuel • on 24 Apr 2024, 01:30 • Replies 2 • Views 353
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