Angle 2 is equal to angle 3, by definition of angle bisector. In fact, a line is an angle bisector if it cuts the angle in two equal angles, which in this case are 2 and 3.
Finally, we can state that angles 1 and 3 are the same by the transitive property of congruence, because we prooved that angle 1 equals angle 2 and angle 2 equals angle 3, so we can conclude that angle 1 equals angle 3.
1. 7
2. 6
3. 2
(If I was wrong correct me, I completely forgot 5th grade math problems)
Hey there! :D
Add the expression's together.
3x+y=27
-3x+4y= -42
3x+(-3x)= 0
y+4y=5y
27+(-42)= -15
5y=-15
Divide both sides by 5.
y=-3
Now, find x.
3x+y=27
3x-3= 27
3x=30
x=10
The solution is (10,-3).
I hope this helps!
~kaikers
4x-24=16
4x=16+24
4x=40
4x÷4=40÷4
x=10
