What does it mean when a tool of assessment is characterized as reliable? Under what conditions might one expect an otherwise useful tool of assessment to be unreliable?

4friends evenly divided up a n-slice pizza. one of the friends, harris, ate 1 slice than he received. how many slices of pizza did harris eat? as an expression

1. are the triangles similar and if so why? what is the value of x? show your work.

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.