3 years ago

An expression is shown below:

Mathematics

1 answer:

valentina_108 [34]3 years ago

5 0

Answer:

A: two expressions equivalent to 3(m + 5 + 9m) are 3(5 + 10m) and (3m + 15 + 27m)

B: 3(m + 5 + 9m) = 3(5 + m + 9m) = 3(5 + 10m) [associative property]

3(m + 5 + 9m) = (3m + 15 + 27m) [distributive]

C: Let m = 2: 3(m + 5 + 9m) = 3(2 + 5 + 9(2)) = 3(7 + 18) = 3(25) = 75

3(5 + 10m) = 3(5 + 10(2)) = 3(5 + 20) = 3(25) = 75

3m + 15 + 27m = 3(2) + 15 + 27(2) = 6 + 15 + 54 = 75

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