Answer:
x=25°, y=10°
Step-by-step explanation:
∠A+∠B=180°
8y+10y=180°
18y=180°
y=10°
∠B+∠C=180°
10y+4x-20°=180°
10*10°+4x=180°+20° (y=10°)
100°+4x=200°
4x=200°-100°
4x=100°
x=25°
200 - 150 = 50
so
50 / 200 * 100 = 25%
answer is <span>B) 25% </span>
<span>To write an improper fraction as a mixed number, divide the top part by the bottom part. The quotient is the whole number, and the remainder is the numerator.</span>
Step-by-step explanation:
9) y= -2x - (5/2)
10) y = -5 + (5/2)