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1. solve \\(-4t - 5 > 2t + 13\\) for \\(t\\). \\(t < -9\\) \\(t > -3\\)…

Question

  1. solve \\(-4t - 5 > 2t + 13\\) for \\(t\\).

\\(t < -9\\)

\\(t > -3\\)

\\(t < -3\\)

\\(t > -9\\)

Explanation:

Response

<pre_analysis>
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"concepts_used": [
"Linear Equation Solving",
"Algebraic Simplification"
],
"new_concepts": [
"Solving Linear Inequalities",
"Inequality Sign Reversal"
],
"current_concepts": [
"Linear Equation Solving",
"Algebraic Simplification",
"Solving Linear Inequalities",
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</pre_analysis>

<reasoning>

Isolate variable terms

Using the Linear Equation Solving and Algebraic Simplification knowledge points
\[

$$\begin{aligned} -4t - 5 &> 2t + 13 \\ -4t - 2t - 5 &> 13 \\ -6t - 5 &> 13 \end{aligned}$$

\]

Isolate constant terms

Using the Linear Equation Solving and Algebraic Simplification knowledge points
\[

$$\begin{aligned} -6t &> 13 + 5 \\ -6t &> 18 \end{aligned}$$

\]

Solve for t and reverse inequality sign

To solve for \(t\), we divide both sides by \(-6\). Since we are dividing by a negative number, we must reverse the inequality sign from \(>\) to \(<\).
\[

$$\begin{aligned} t &< \frac{18}{-6} \\ t &< -3 \end{aligned}$$

\]
</reasoning>

<answer>
<mcq-option>(A) \(t < -9\)</mcq-option>
<mcq-option>(B) \(t > -3\)</mcq-option>
<mcq-correct>(C) \(t < -3\)</mcq-correct>
<mcq-option>(D) \(t > -9\)</mcq-option>
</answer>

<plot>
{
"elements": [
{
"type": "bentinequality",
"params": [{ "x": -3, "operator": "<", "labelText": " t < -3 " }],
"properties": {
"strokeColor": "#8C55F2",
"strokeWidth": 3,
"showLabel": true
}
}
],
"timestamps": [0.5]
}
</plot>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Solving Linear Inequalities"
]
}
</post_analysis>

Answer:

<pre_analysis>
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"question_count": 1,
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"step_cot",
"multiple_choice_formatter",
"explain_then_answer",
"tutor",
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],
"needs_drawing": true,
"concepts_used": [
"Linear Equation Solving",
"Algebraic Simplification"
],
"new_concepts": [
"Solving Linear Inequalities",
"Inequality Sign Reversal"
],
"current_concepts": [
"Linear Equation Solving",
"Algebraic Simplification",
"Solving Linear Inequalities",
"Inequality Sign Reversal"
]
}
</pre_analysis>

<reasoning>

Isolate variable terms

Using the Linear Equation Solving and Algebraic Simplification knowledge points
\[

$$\begin{aligned} -4t - 5 &> 2t + 13 \\ -4t - 2t - 5 &> 13 \\ -6t - 5 &> 13 \end{aligned}$$

\]

Isolate constant terms

Using the Linear Equation Solving and Algebraic Simplification knowledge points
\[

$$\begin{aligned} -6t &> 13 + 5 \\ -6t &> 18 \end{aligned}$$

\]

Solve for t and reverse inequality sign

To solve for \(t\), we divide both sides by \(-6\). Since we are dividing by a negative number, we must reverse the inequality sign from \(>\) to \(<\).
\[

$$\begin{aligned} t &< \frac{18}{-6} \\ t &< -3 \end{aligned}$$

\]
</reasoning>

<answer>
<mcq-option>(A) \(t < -9\)</mcq-option>
<mcq-option>(B) \(t > -3\)</mcq-option>
<mcq-correct>(C) \(t < -3\)</mcq-correct>
<mcq-option>(D) \(t > -9\)</mcq-option>
</answer>

<plot>
{
"elements": [
{
"type": "bentinequality",
"params": [{ "x": -3, "operator": "<", "labelText": " t < -3 " }],
"properties": {
"strokeColor": "#8C55F2",
"strokeWidth": 3,
"showLabel": true
}
}
],
"timestamps": [0.5]
}
</plot>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Solving Linear Inequalities"
]
}
</post_analysis>