-5
a^2-25=0
a^2=25
take the square root of both sides
a=5, and -5
This is a true statement. They need to be on the same plane in order to be parallel.
50 bc since all the angles in a triangle are 180 degrees the other angle in the complete triangle is 40 degrees and since the lines are parallel it would be a corresponding angle to the angle beside x, then you would take 90+40 +x= 180 bc it’s a straight angle
you would get 50
