Answer:
x+y=2
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
m=(-3-10)/(5-(-8))
m=-13/(5+8)
m=-13/13
m=-1
y-y1=m(x-x1)
y-10=-1(x-(-8))
y-10=-(x+8)
y-10=-x-8
y=-x-8+10
y=-x+2
y-(-x)=2
y+x=2
x+y=2
Answer:
I'm pretty positive it's All real answers?
You know angles B and C are both 60°, the values of the angles in an equilateral triangle. Since the sum of angles in a quadrilateral is 360°, you have
B + C + x + y = 360°
60° +60° + x + y = 360°
x + y = 240°
We can check this by seeing if Pythagorean's theorem applies. The longest side is the hypotenuse, so let's see if this is true:


This is, indeed correct, thus, this
<em>is </em><em>
a right triangle.</em>