Answer:
Y is 37
Step-by-step explanation:
115 +28=143
An angle is 180
So we subtract 180-143 which gives us the answer of 37 degree
Answer:
1. 
2. 
3. 
Step-by-step explanation:
The equation of the line that passes trough the points A(14,-1) and B(2,1) is

The y-intercept of this line is

Line BC is perpendicular to line AB, then its slope is
Line BC passes through the point B, so

If the y-coordinate of point C is 13, then x-coordinate is

4.for every minute you walk 30 feet
5. Minutes
6.distance
7.just put 1 on the x axis and 30 on the y axis so the coordinate pair would be (1,30) and do the same for the rest (3, 90) (5,150) and (7,210)
Where's the triangle? Thanks!