Answer:
a
Step-by-step explanation:
1. Subtract the second equation from the first and solve for y: 0 - 4y = -20 => y=5
2. Substitute y=5 into one of the equations and solve for x: 4x - 3(5) = -3 => 4x = 12 => x=3
So the solution is (x, y) = (3, 5)
Answer:

Step-by-step explanation:
First we need to set up an equation in order to find the value of x. We know that the sum of these angles are 180°

Now we can plug in our value for x into each of the angle's equations

24 is it because it is next to c
Perimeter means the sides add up to 12.
Rectangles have two pairs of equal sides.
2(one side) + 2(another side) = 12
2 (one side + another side) = 12
(one side + another side) = 6
To draw a rectangle with a perimeter of 12 units, the two adjacent sides must add up to 6.
1 + 5
2 + 4
3 + 3