Finding the current of a stream pamela requires 3 hours to swim 15 miles downstream on the illinois river. the return trip upstream takes 5 hours. find pamelas average speed in still water. how fast is the current?

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 =