7/11 and 7/11 determine if parallel, perpendicular, or neither

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

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?