Answer:
5+7*x
Step by step explanation.....
Answer:
6x + 14y + 13
Step-by-step explanation:
combine the like terms.
(5+8), (2y + 12y), and 6x which will be dealt with after solving.
13 + 14y + 6x. And that is it because there are no more like terms to be put together.
The answer is 3/2 rise over run
Area of the pentagon: 342 cm2
Step-by-step explanation:
The figure of the pentagon is missing: find it in attachment.
The area of the pentagon can be seen as the area of 5 equal triangles, each of them having a base equal to the length of the side of the pentagon,
L = 14.1 cm
and the height of each triangle can be found by using Pythagorean's theorem:

The area of each of the 5 triangles is

Therefore, the area of the pentagon is 5 times this area:
Learn more about area of regular figures:
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14, because 2x7=14. Every gift box uses 2 feet on ribbon. There are 7 gift boxes, so she needs 2+2+2+2+2+2+2 length of ribbon.