Answer:
B) 20.5
Step-by-step explanation:
y=-1/3 x +2/3
all steps are in picture
7
2-(-8)+(-3)
2+8-3
10-3
Its 63.435
https://www.calculator.net/triangle-calculator.html?vc=&vx=7&vy=&va=90&vz=14&vb=&angleunits=d&x=104&y=23
I always used this when it came to triangles
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