Answer:
180° = x + (2x -15)
180°=3x-15
3x = 195
x =65°
x + y = 180°
65+ y= 180°
y = 115°
x = 65, y = 115
Step-by-step explanation:
x and 2x - 15 are adjacent angles and supplementary, thus
2x - 15 + x = 180
3x - 15 = 180 ( add 15 to both sides )
3x = 195 ( divide both sides by 3 )
x = 65
y and 2x - 15 are congruent ( alternate angles ), thus
y = 2x - 15 = 2(65) - 15 = 130 - 15 = 115
100
20ft
