Answer:
{
}
Step-by-step explanation:
The given system of equations is;

and

We rewrite the equations in the standard form to get:


We now substitute equation (3) into equation (4) to get:

Group similar terms:


Divide both sides by 2

This implies that:

Therefore the solution set is:
{
}
Answer:
180 degree
Step-by-step explanation:
A straight line is 180 degrees, or a "straight" angle.
Answer:
32
Step-by-step explanation:
32, 13, 45, 56, 76, 54, 32, 32
Mode is the number that appears most often
32 appears 3 times so it is the number that appears most often