(2x+9) + (10x+15) = 180°
2x+9 + 10x+15 = 180°
Add up liked terms
12x+24 = 180°
-24 on both sides
12x = 156°
/12 on both sides
x = 13
< ABC = (2x+9)
< ABC = 2(13)+9
Answer : < ABC = 35°
< CBD = (10x+15)
< CBD = 10(13)+15
Answer: < CBD = 145°
Answer:
Y= -2
Step-by-step explanation:
3y+5=(2-3)
3y+5=-1
3y=-5-1
y= -6÷3
y= -2
Answer:
18 percent
divide 9 by 20 and you get 0.18, then move the decimal over to the right two times and you will get 18