Answer:
20
Step-by-step explanation:
3x + x + 100 = 180 (sum of angles on a straight line)
4x = 180-100
4x=80
divide both sides by 4
x=20
Answer:
d. quadrilateral
Step-by-step explanation:
Answer:
X = i don't know
Y = 50°
Step-by-step explanation:
dugobdddjcjcfsfhjjgkcfzdd
Answer: 540
Step-by-step explanation:
To solve this expression, we use PEMDAS to solve it.
-9*-6= 54
54*10=540
