The lenghts of the legs of a 45 -45 -90 triangle can be described by the expressions 3x-10 and x +2 what is the length of the legs of the triangle

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

1. if events a and b are non-overlapping events, how do you find the probability that one or the other occurs? 2. what does it mean if p(a or b) equals 1?

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?