Answer:
6x + 12
Step-by-step explanation:
If you add all of the numbers together, as you do for the perimeter, you get 6x + 12.
Answer:
The sale price was $71.2
Step-by-step explanation:
Answer:
51
Step-by-step explanation:
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Since the diameter of the circle is 6 inches, then the radius will be half that, or 3 inches,
Answer:
Step-by-step explanation:
The series is missing from the question. I will answer this question with a general explanation by using the following similar series:

Required
The series
To do this, we simply replace n with the values
means n starts from 0 and ends at 6
means the series is a summation series
So, we have:

