Two angles that sums to 180° is supplementary.
Two angles that sums yo 90° is complementary.
If the ordered pair is a solution, then the two equations in the system should be true after we plug in the points, like so:
(3) + 3(1) = 6 and 4(3) - 5(1) = 7
Then you simplify. 3 + 3 = 6 and 12 - 5 = 7, therefore the ordered pair is a solution of the given system.
<span>Simplifying
3a + -2b = 5a + 6b
Solving
3a + -2b = 5a + 6b
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-5a' to each side of the equation.
3a + -5a + -2b = 5a + -5a + 6b
Combine like terms: 3a + -5a = -2a
-2a + -2b = 5a + -5a + 6b
Combine like terms: 5a + -5a = 0
-2a + -2b = 0 + 6b
-2a + -2b = 6b
Add '2b' to each side of the equation.
-2a + -2b + 2b = 6b + 2b
Combine like terms: -2b + 2b = 0
-2a + 0 = 6b + 2b
-2a = 6b + 2b
Combine like terms: 6b + 2b = 8b
-2a = 8b
Divide each side by '-2'.
a = -4b
Simplifying
a = -4b</span>
Answer:
(x + 16)° = 141°
Step-by-step explanation:
- Given figure is of octagon
- Sum of interior angles of an octagon is 1080°
- -> (x + 16)° = (125 + 16)°
