3x+x+20 = 180
4x = 180-20
4x = 160
x = 40
×+20+3x+2x+38+C=360
40+20+3×40+2×40+38+C=360
40+20+120+80+38+C=360
298+C=360
C=360-298
C =62°
Answer:
either you have 62.6 + 62.5 + 55
or you have 55 + 55 + 70
Step-by-step explanation:
There are only two possible answers.
Either 55 degrees is by itself and the two equal angles are something other than 55 in which case you would write it as
x + x + 55 = 180 Subtract 55 from both sides
2x + 55 - 55 = 180 - 55
2x = 125 Divide by 2
x = 125/2
x = 62.5
OR
There are 2 angles that are both 55
x + 55 + 55 = 180
x + 110 = 180
x = 70
i believe the answer is 4.47, hope this helps