Answer:
Step-by-step explanation:
Okay, so first of all, when a slope is negative, the line goes down from left to right, not up from left to right. Then, plot the Y intercept as -2. Finally, either go up 2 and left 3 or down 2 and right 3.
Answer: 
Step-by-step explanation:
If we draw RP and PS, then in the quadrilateral formed, we know that 
, and since angles in a quadrilateral add to 360 degrees, this means 
.
Thus, arc RS also measures 126 degrees
Answer:
41.4
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
cos theta = adj / hyp
cos x = 9/12
Taking the inverse cos of each side
cos ^-1 ( cos x) = cos ^-1 (9/12)
x = 41.41
To the nearest tenth
x = 41.4
21) 2x+16=2*23+16=46+16=62
3x-7=3*23-7=69-7=62,
so we can see that 2x+16=3x-7, that means that lines are parallel , because the corresponding angles are equal.
problem with triangle
130+a=180, a=50,
50+8x+2x=180
50+10x=180
10x=130
x=13
8x+b=180
b=180-8x=180-8*13=76
2x+c=180
c=180-2x
c=180-2*13= 154
