10. if $x = 5$ and $y = -2$, then $\frac{10y}{x} + 3y^2 =$

* 32
* 8
* -16
* $-\frac{8}{5}$
* 16

Question

10. if $x = 5$ and $y = -2$, then $\frac{10y}{x} + 3y^2 =$

* 32
* 8
* -16
* $-\frac{8}{5}$
* 16

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [], "new_concepts": [ "Algebraic Substitution", "Order of Operations" ], "current_concepts": [ "Algebraic Substitution", "Order of Operations", "Evaluating Expressions" ] } ## Substitute the given values into the expression $$ \frac{10(-2)}{5} + 3(-2)^2 $$ ## Evaluate the first term $$ \frac{-20}{5} = -4 $$ ## Evaluate the second term and sum the results $$ 3(4) = 12 $$ $$ -4 + 12 = 8 $$

(A) 32

(B) 8

(C) -16

(D) $-\frac{8}{5}$

(E) 16

{ "subject": "Mathematics", "question_type": "Multiple Choice", "knowledge_point": [ "Mathematics", "Algebra", "Evaluating Expressions" ] }

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QUESTION IMAGE

Question

Explanation:

Substitute the given values into the expression

Evaluate the first term

Evaluate the second term and sum the results

Answer: