Atriangle has sides with lengths: 6, 9, and 5. how do you find the area of the triangle using heron's formula?

Is the square root of 4 plus the square root of 16 rational?

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

Tony is charged $ 50 and additional $0.15 per miles for renting a car. a) represent the cost of renting a car with an equation,and the determine the cost if he drove it70 miles.b) what would be the cost of a car rental if the car was driven 250 miles? show work