55.3k views
0 votes
consider the expressions (3m + 2n - 6) and (-4 -6m + 7m) Part A what is the sum of the expressions for n = -2 and m = 5? the sum is [ ] part B which expression shown is equivalent to the sum of two original expression written in standard form?1. -3m + 9n - 10 2. 10m - 4n - 10 3. -4mn 4. 9n - 3m + 10

2 Answers

0 votes

Answer:

Part A; - 43

Part B : -3m + 9n - 10

Explanation:

User Kunal Raut
by
7.9k points
4 votes

First let us sum the expressions


\begin{gathered} 3m+2n-6 \\ -6m+7n-4 \\ ----------- \\ -3m+9n-10 \end{gathered}

Hence, the sum of the expression is


-3m+9n-10

Now we put in n = -2 and m = 5 and evaluate the expression to get:


\begin{gathered} -3(5)+9(-2)-10=-15-18-10 \\ =-43 \end{gathered}

Hence, the expression evaluated at n = -2 and m = 5 gives

-43 and the answers are:

Part A; - 43

Part B : -3m + 9n - 10

User Arne Stephensson
by
7.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories