It could be 10 which would make the triangle a right triangle, since the values follow the Pythagorean theorem (a^2+b^2=c^2)
Y=mx+b
m=slope
perpendicular lines have slopes that multiply to get -1
the slopes are
for

and

, the slope are

since their product is -1, the lines are perpendicular
Answer:
Here's one way
Step-by-step explanation:
13) multiply each term by 24
9x - 32x = 96
-23x = 96, divide both sides by -23
x = -4.17
Answer:
The measure of angle x is 115 degrees
Step-by-step explanation:
Supplementary angles are angles which, when added together, equal 180 degrees. So, subtracting 65 from 180 would get you the answer(115).