<h3>
Therefore they are perpendicular.</h3>
Step-by-step explanation:
A equation of line is
y =mx +c
Here the slope of the line is m.
Given equations are
x - 2y = 18
⇔-2y = -x +18
............(1)
and 2x + y = 6
⇔y = -2x +6 ............(2)
Therefore the slope of equation (1) is
= 
Therefore the slope of equation (2) is
= -2
If two lines are perpendicular, when we multiply their slope we get -1.
therefore,
=
. (-2) = -1
Therefore they are perpendicular.
ANSWER: x = 130°
EXPLANATION: You must add given angles and then subtract from 180°.
c = amount of chocolate donuts
m = amount of maple donuts.
so we know the total in all is 41 donuts, thus c + m = 41.
we also know that whatever c is, m is 25 fewer than that, m = c - 25.
