Hi student, let me help you out! :)
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We are asked to simplify the expression 
.
That's exactly what we need to do - combine like terms.
So, we subtract:
Which gives us:
Hope it helps you out! :D
Ask in comments if any queries arise.
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Given:
The three exterior angles of a pentagon measures 60,80 and 90.
To find:
The measure of other two exterior angle, assuming them equally.
Solution:
Let x be the measure of two other exterior angles of the pentagon.
We know that the sum of all exterior angles of a pentagon is 360 degrees.
Divide both sides by 2.
Therefore, the measures of both exterior angles are 65 degrees.
1 + (-5) becomes 1 - 5 because you are adding a negative number.
1 - 5 is -4
9.42 is the circumference, for future refernce its just pi times diameter :)
Answer:
A,D,E
Step-by-step explanation:
Edge 2020
