Answer:
an unknown point? like 0,7 or 0,5 or 0,1 or 0,0 or 0,anything?
Step-by-step explanation:
Use Pythagorean thrm
17^2+10^2=21^2
289+100=441
389≠441
This is not a right triangle
y axis is vertical x is horizontal
Answer:
x = 3
Step-by-step explanation:

56 is not equal to 30
Answer:
i think the answer is b if i am wrong please tell me please :(
Step-by-step explanation: