Look up Pythagorean theorem and it will explain it better than i can click khan academy but basically try drawing a triangle and explain it
About 1/2 since there is only 2 sides to a coin.
Answer:
Step-by-step explanation:

Determine whether the relation is a function.<br><br>
(-3,3), (-2,2), (-1,1), (1,-1), (2,-2), (3,-3)
Luba_88 [7]
Answer:
Function
Step-by-step explanation:
Because there is an output for every input listed of its opposite.
The vertex is the highest point on a downward-opening parabola or the lowest point on an upward-opening parabola.