Answer:
Step-by-step explanation:
Hello : let A(XA,YA) B(XB,YB)
the slope is : (YB - YA)/(XB -XA)
Well I'm still trying to solve the first question so I'll tell you the other answers
the answer for the second question is :

and for the third question :
Where is the question?? I'll be glad to answer in the comments once the question is given. Hope to hear from you!
Answer: T=4
Step-by-step explanation:
Answer:
x=30
Step-by-step explanation:
The two angles are supplementary. They add to 180
4x+20 + 40 =180
Combine like terms
4x+60 =180
Subtract 60 from each side
4x+60-60 = 180-60
4x = 120
Divide each side by 4
4x/4 = 120/4
x = 30