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4 years ago

Can you help me evaluate this: 7m + 14m - 6n - 5n + 2m

Mathematics

2 answers:

Aleksandr-060686 [28]4 years ago

7 0

Answer: 23m - 11n

Step-by-step explanation:

First, we combine all like terms

the like terms for m are: 7m, 14m, and 2m

7m + 14m + 2m = 23m

the like terms for n are: -6n and -5n

-6n + (-5n) = -11n

Then, we put them back.

23m - 11n is the final answer

Artist 52 [7]4 years ago

3 0

Answer:

23m - 11n

Step-by-step explanation:

7m + 14m - 6n - 5n + 2m = (7m + 14m + 2m) - (6n + 5n)

= 23m - 11n

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kondor19780726 [428]

Answer:

39 percent is increase in mileage.

Thus, the correct option is B. 39%.

Step-by-step explanation:

Given:

A runner increased her distance from 9 miles to 12.5 miles a week.

Now, to find percent increase in mileage.

Previous mileage = 9 miles.

Present mileage = 12.5 miles.

Mileage increase = 12.5 - 9 = 3.5 miles.

Now, to get the percent increase in mileage:

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