Answer:
m∠ABC = 45°
Step-by-step explanation:
See the attached figure.
As shown in the figure
Line C B extends through point D to form the exterior angle that is 135 degrees.
So, m∠ABD = 135°
But m∠ABC + m∠ABD = 180°
∴m∠ABC = 180° - m∠ABD = 180° - 135°= 45°
Also, we should know that
m∠ABD = m∠BAC + m∠ACB
So, m∠ACB = 135° - 75° = 60°
========================================
<u>Very important note:</u>
If we replaced the location of B and C
SO, m∠ABC = 60° and m∠ACB = 45°
=========================================
6.5x2.5=16.25
0.6x2.5=1.5
6.0x2.5=15
1.) 1.5
2.) 15
3.) 16.25
I hope that helped. Good luck!
The 2x and 76 are opposite angles so they are equal.
2x = 76
x = 38 degrees
y and 76 are adjacent angles so y = 180 - 76
= 104 degrees
Answer:
Step-by-step explanation:
in x+3y=4
x = 3y +4 y = -1/3x + 4/3
in -x+y=4
x = y−4 y = x+4