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Dominik [7]
3 years ago
8

Evaluate the expression 2m+2n if m=9 and n=3

Mathematics
2 answers:
tatuchka [14]3 years ago
4 0
Just substitute each number in for the variables: 9 for m and 3 for n.

2m+2n
= 2(9)+2(3)
= 18+6
= 24
VashaNatasha [74]3 years ago
4 0
Substitute m and n values into the expression.
2(9)+2(3)
18+6= 24
24 is your answer.
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Step-by-step explanation:

In this problem, one is given an algebraic inequality. These types of inequalities can be solved using similar methods that one uses to solve an algebraic expression, in essence, one uses inverse operations. The only major difference between solving algebraic inequalities and algebraic expressions is that when one divides or multiplies by a negative number, one must remember to flip in the inequality sign to maintain the trueness of the equation. In this case, such a rule will not come into play.

7w - 5 < 1 - 3w

Inverse operations,

7w - 5 < 1 - 3w

+3w          +3w

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/10     /10

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