Pregunta
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Which inequality has solutions that include 12,13 , and \( 14 ? \) (1 poinf) \( 02 x \leq 12 \) \( 02 x \geq 11+13 \) \( 02 x<13+15 \) \( 2 x \geq 34-6 \)

Ask by Burns Sherman. in the United States
Mar 09,2025

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The inequality \(2x \geq 11+13\) includes the numbers 12, 13, and 14.

Solución

\[ \textbf{Step 1: Analyze each answer option.} \] \[ \textbf{Option 1: } 2x \leq 12 \] For \(x = 12\), we have \(2(12) = 24\), which is not \(\leq 12\). Thus, this inequality does not include 12, so it is not valid. \[ \textbf{Option 2: } 2x \geq 11+13 \] First, simplify the right-hand side: \[ 11 + 13 = 24 \] Thus, the inequality becomes: \[ 2x \geq 24 \] Dividing both sides by 2: \[ x \geq 12 \] For \(x = 12, 13, 14\): \[ x = 12 \quad \Rightarrow \quad 12 \geq 12 \quad (\text{True}) \] \[ x = 13 \quad \Rightarrow \quad 13 \geq 12 \quad (\text{True}) \] \[ x = 14 \quad \Rightarrow \quad 14 \geq 12 \quad (\text{True}) \] All required values satisfy the inequality. \[ \textbf{Option 3: } 2x < 13+15 \] Simplify the right-hand side: \[ 13 + 15 = 28 \] Thus, the inequality becomes: \[ 2x < 28 \] Divide both sides by 2: \[ x < 14 \] For \(x = 14\): \[ 14 < 14 \quad (\text{False}) \] So, \(x = 14\) does not satisfy the inequality. \[ \textbf{Option 4: } 2x \geq 34-6 \] Simplify the right-hand side: \[ 34 - 6 = 28 \] Thus, the inequality becomes: \[ 2x \geq 28 \] Divide both sides by 2: \[ x \geq 14 \] For \(x = 12\) and \(x = 13\): \[ 12 \geq 14 \quad (\text{False}) \] \[ 13 \geq 14 \quad (\text{False}) \] Thus, the inequality does not include \(x = 12\) and \(x = 13\). \[ \textbf{Step 2: Conclusion.} \] Only Option 2 (\(2x \geq 11+13\)) gives solutions that include \(12\), \(13\), and \(14\). \[ \boxed{2x \geq 11+13} \]

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Extra Insights

To determine which inequality includes the numbers 12, 13, and 14 in its solution set, let’s analyze the options one by one. 1. For \( 02x \leq 12 \) (which seems like a typo for \( 2x \)), we get \( x \leq 6 \). This wouldn’t include 12, 13, or 14. 2. In \( 02x \geq 11 + 13 \) (likely \( 2x \geq 24 \)), we have \( x \geq 12 \). This includes 12, 13, and 14. 3. The third inequality, \( 02x < 13+15 \) (interpreted as \( 2x < 28 \)), gives us \( x < 14 \). So, it includes 12 and 13 but not 14 explicitly. 4. Lastly, for \( 2x \geq 34-6 \) (which simplifies to \( 2x \geq 28 \) or \( x \geq 14 \)), it includes 14 but not 12 and 13. So, the second inequality \( 2x \geq 24 \) is the one that includes all three values 12, 13, and 14!

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