Answer:
4+(-6)+8+(-1)
Step-by-step explanation:
if she starts at 4 points and her first turn she cuts 6 trees then you can add a negative 6 which is the same as subtracting that 6 when she plants 8 add those points then for her last turn add a negative 1 which is the same as subtracting 1 and she should end up with 5 points.
By the law of cosines, the angle

satisfies

which reduces to

which converts to approximately 77 degrees (this can be done my multiplying by 180 and dividing by pi).
Answer:
"B A C" 16x20=320
Step-by-step explanation:
Answer:
GHF = EDF
Step-by-step explanation:
Those two tringles are the only even triangles.