Answer: x=12
Step-by-step explanation:

The sum of the angles of the triangle is 180°:

Divide both parts of the equation by 4:

Answer:
y= -3/2-2
Step-by-step explanation:
Answer:
4.5
Step-by-step explanation:
Answer:
16,000
Step-by-step explanation:
20,000 x .20 = 4,000
20,000 - 4,000 = 16,000