1st? - cynthia paid $0.20 per hobby magazine at a tag sale. she bought half of all the magazines that were for sale and paid $10. how many magazines were there in all?

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =