Mari y su padre se llevan 25 años. calcula la edad de mario sabiendo que dentro de 15 años la edad de su padre sera el doble de el. Ya se que mario tiene 15 lo que quiero es una explicacion algebraica

The car hoist allows the car to be driven onto the platform, after which the rear wheels are raised. if the loading from both rear wheels is 1380 lb, determine the force in the hydraulic cylinder ab. neglect the weight of the platform itself. member bcd is a right-angle bell crank pinned to the ramp at c. the force is positive if in tension, negative if in compression.

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

Akg a of 55 m at an of 11 ? . if is at 98 km/h, be ?