Acertain number of quartersz five times as many pennies as quarters, and 12 more dimes than quarters are worth 8.00. dollars how many of each coins are there

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 =