Solve the system of linear equations by substitution.
x= 16-4y

3x+4y=8

x = - 4

y = 5

Step-by-step explanation:

x = 16 - 4y               Add 4y to both sides.

x + 4y = 16              Subtract x  from both sides

4y = 16 - x

Now look at the second equation

3x + 4y = 8              Substitute the 4y in the equation above into this equation

3x + 16 - x = 8          Combine

2x + 16 = 8               Subtract 16 from both sides

2x = 8 - 16                Combine

2x = - 8                     Divide by 2

2x / 2 = - 8/2

x = - 4

Use 3x + 4y = 8 to solve for y

Use 3(-4) + 4y = 8

-12 + 4y = 8                Add 12 to both sides

4y = 8 + 12                 Combine

4y = 20                      Divide by 4

4y/4 = 20/4            

y = 5

central angle of a triangle has the same measure as its intercepted arc.

step-by-step explanation: