Answer:
Given the equations:
.....[1]
....[2]
Substitute the value of x in [1] we get;'

Use identity: 

Combine like terms;

Subtract 36 from both sides we get;


By zero product property, we get;
y = 0 and 
Substitute these y values in [2] to get x values;
For y = 0 we have;
x = 2(0) +6 = 0+6 = 6
For x = -4.8
x = 2(-4.8)+6 = -9.6 + 6 = -3.6
Therefore, the solution for the given equations are; (6, 0) and (-3.6, -4.8)
Answer:
67°
Step-by-step explanation:
A right angle = 90°
90° - 23° = x° = 67°
The line does not represent a direct variation because it does not go through the origin.
Answer:
100 tickets were sold.
Step-by-step explanation:
If she bought 20 tickets and had a 20 percent chance of winning that means there were 100 sold tickets because 20 percent of 100 would be the 20 tickets she purchased.