Answer:
x =4
Step-by-step explanation:
sum of angles in a triangle = 180
(equilateral triangle) all sides are equal
180 ÷ 3 = 60
10x+20 =60
10x = 60 - 20
10x = 40
10x ÷10 = 40÷ 10
x = 4
Answer:
The answer is nearly $81 billion.
Step-by-step explanation:
- If we know that 80% of airline tickets worth $65 billion, then
. - Then,to know how much billion dollars worth the total tickets, we just have to clear out
of the equation, by dividing both sides by 0.8, which yields 
84 cents a pound divide 2 1/4 by 1.89 equals 0.84