Answer:
x=20
3x= 3(20)=60
4x= 4(20)=80
Step-by-step explanation:
The angles CD is 90 degrees because the small square indicates
it. Angles AD are a straight angle, therefore all the other angles within A to D, must equal 180 degree. (straight line/angle=180 degrees).
so AB + 70+ 90= 180 degrees
AB= 180 -70-90
AB=20
x=20
3x= 3(20)=60
4x= 4(20)=80
Answer:

Step-by-step explanation:

Make denominators same:

Add the numerators:


Apply the rule:

Therefore,

Cancel out common factor of 2x+1:

Answer:
y=3x-5
Step-by-step explanation:
This is the only line that will pass through these points.