(21+21)÷7
Step-by-step explanation:
21+21=42 42÷7=6 I'm not good at explaining lol
<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:
I'm just here for my points sorry bro
Answer:
x=1
Step-by-step explanation:
3x=4-1
3x=3
x=1