Tell whether line segments of the given lengths can or cannot be the sides of a triangle. If they can, tell whether the triangle would be scalene, isosceles, or equilateral. 4. 6 in., 4 in., 9 in.
5. 8 km, 8 km, 8 km
6. 2 in., 2 in., 1 in.
7. 6 ft, 3 ft, 3 ft

Afamily has two cars. the first car has a fuel efficiency of 25 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. during one particular week, the two cars went a combined total of 1025 miles, for a total gas consumption of 55 gallons. how many gallons were consumed by each of the two cars that week?