Answer:
y = 130°
Step-by-step explanation:
4x + 8 + x + 7 + 3x - 19 = 180 (all angles in a triangle add upto 180)
8x = 184
x = 23°
3x - 19 + y = 180 (supplementary = 180)
sub x = 23 into equation
50 + y = 180
y = 130°
n = last test
(87 + 78 + 61 + n) : 4 = 78,5
87 + 78 + 61 + n = 78,5 x 4
n = 314 - 226
n = 88
Your two expressions for y will be equal when x=0, y=-10.
Isolate The variable by dividing each side by factors that don’t contain variable
X=407 that’s if you round to the nearest whole number if you don’t want that the answer is 406.74874601
38 + 38 =78? i'm not sure cuz you had typo's.