Please help, this is from ANNOYING Khan Academy.

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

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 =

Need so much on this one how many yards?