In linear regression, how does an analyst know if the model is good enough to use for predictions?

Given the conditional statement, match the following. conditional statement: if two lines intersect, then their intersection is one point.

Will used 20 colored tiles to make a design in art class. 5/20 of his tiles were red. what is an equivalent fraction for the red tiles?

Aefg - almn. find the ratio of aefg to almn. a)1: 4 b)1: 2 c)2.1 d)4: 1