Answer:
A: 40 degrees
Step-by-step explanation:
Since every triangle is 180 degrees, you can start off by subtracting 50 from 180 since that side does not contain a y for you to solve.
Since the other two sides do have a y in them, you would set 130 degrees equal to y+10 and 2y:
130=y+10+2y
Then you would isolate the y's by subtracting 10, and you would add y and 2y together to get:
120=3y
Finally, you would divide 120 by 3 to get your answer, 40=y.
Hope this helps!
Set both y’s equal to each other.
2x-1 = 3x+4
2x-3x = 4-(-1)
-x = 5
x = -5
Plug x = -5 into any of the given equation. I will use the first one as an example.
y = 2x-1
y = 2(-5)-1
y = -11
Answer: (-5, -11)
P² - r²
subtitute p =10 and r= -4
10² - (-4)² = 100 - 16 = 84
