Answer: the numbers were negative so he needed to add the positive numbers to that equation (I think sorry if I’m wrong)
Step-by-step explanation:
Answer:
so he can get brainliest ^^
also I agree with the third option
hope this helps :)
Answer:

Step-by-step explanation:
Since this is a right triangle, we are able to use pythagorean theorem, a^2+b^2=c^2. In this case x would be the "c", so 22^2+22^2=x^2. Isolate the variable and solve for x. 484+484=x^2
968=x^2
=x
Answer:
I believe it's A, because all triangles have 3 vertices.
Step-by-step explanation: