2.7 module 2 post-test

solve the equation $d = rt$ for $t$:

$t = d - r$
$t = r + d$
$t = \frac{d}{r}$
$t = \frac{r}{d}$

Question

2.7 module 2 post-test

solve the equation $d = rt$ for $t$:

$t = d - r$
$t = r + d$
$t = \frac{d}{r}$
$t = \frac{r}{d}$

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "tutor", "mastery_adaptive_brevity" ], "needs_drawing": false, "concepts_used": [ "Literal Equations", "Rearranging Formulas" ], "new_concepts": [], "current_concepts": [ "Literal Equations", "Rearranging Formulas" ] } ## Identify the given equation and target variable Using the *Literal Equations* and *Rearranging Formulas* knowledge points $$ \begin{aligned} &\text{Given equation: } d = rt\ &\text{Target variable: } t \end{aligned} $$ ## Isolate the target variable Using the *Rearranging Formulas* knowledge point $$ \begin{aligned} d &= rt \ \frac{d}{r} &= \frac{rt}{r} \ t &= \frac{d}{r} \end{aligned} $$

(A) $t = d - r$

(B) $t = r + d$

(C) $t = \frac{d}{r}$

(D) $t = \frac{r}{d}$

{ "subject": "Mathematics", "question_type": "Multiple Choice", "knowledge_point": [ "Mathematics", "Algebra", "Literal Equations" ] }

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Question

Explanation:

Identify the given equation and target variable

Isolate the target variable

Answer: