Answer:
39.3
its simple
Answer:
y = 12
Step-by-step explanation:
We first need to solve for x
(6x - 11)° and (4x + 23)° are vertically opposite angles and are congruent, so
6x - 11 = 4x + 23 ( subtract 4x from both sides )
6x - 4x - 11 = 4x - 4x + 23 ( simplify both sides )
2x - 11 = 23 ( add 11 to both sides )
2x - 11 + 11 = 23 + 11 ( simplify both sides )
2x = 34 ( divide both sides by 2 )
x = , that is
x = 17
Then
4x + 23 = 4(17) + 23 = 68 + 23 = 91
(9y - 19)° and 91 are a linear pair and sum to 180°
sum the 2 angles and equate to 180
9y - 19 + 91 = 180 ( simplify left side )
9y + 72 = 180 ( subtract 72 from both sides )
9y + 72 - 72 = 180 - 72 ( simplify both sides )
9y = 108 ( divide both sides by 9 )
y = , that is
y = 12
A.
linear model
B.
nonlinear model
45
50
62
69