El doble del cuadrado de la edad de roberto menos 26 veces su edad es igual a cero. si roberto tiene más de 10 años ¿ cual es su edad?

The volume of a cube is 8 in to the 3rd power. how long is each side?

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?