<span>7-4x+2(5x+8)
plug x=-2
7
-4(-2)+2(5(-2)+8)
7+8+2(-10+8)
7+8+2(-2)
7+8-4
11</span>
<h3>
Answer: 72 degrees</h3>
n = 5 is the number of sides in a pentagon
360/n = 360/5 = 72 is the measure of each exterior angle of the regular pentagon. It has to be a regular polygon or else you could have some exterior angle measures that are different. A regular polygon has all sides equal to one another, and it also has all angles equal to one another.
Answer:
1,2,5
Step-by-step explanation:
Answer:
Henry and Valencia are 16 m apart.
Step-by-step explanation:
A sketch to this question shows that their distance apart forms a right angled triangle. So then, we can apply the Pythagoras theorem.
Let the distance between Henry and Valencia be represented by x, so that;
=
+ 
=
+ 
400 =
+ 144
= 400 - 144
= 256
x = 
= 16
x = 16 m
Therefore, Henry and Valentia are 16 meters apart.
The answer is 100 degrees.