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Answer: The correct choice is letter C.
Step-by-step explanation:
Cosine = adjacent/hypotenuse
In this triangle, you are looking for angle degree of cos X.
When finding an angle degree, you must use the inverse of whatever trig ratio you are using. In this case, you would use
.
The adjacent side from x is 12 and the hypotenuse is 15.
So you form your trig ratio which is your answer.
= 0.80
You are given the length of every side, except for two, that can be easily derived from the others:
- The long horizontal side on top is the sum of the three beneath it, so it is

- The vertical one on the right is, similarly, the sum of the opposite side to the far left, and the two small sides near it:

The sum of all sides, including these two, will give you the perimeter of the polygon.
I don’t exactly know what you’re asking so if it is wrong I am so sorry.
The slope would be + $2.50 every 5 minutes.