Un ciclista que circula a una velocidad de 15 km/h tarda 4 horas en recorrer un trayecto. ¿Cuánto tiempo tardará en recorrer el mismo trayecto, otro ciclista a una velocidad de 20 km/h?
¿Cuál fue la distancia que recorrió cada ciclista?
¿Cuál es el comportamiento de la velocidad y el tiempo recorrido?
¿Cuál es el valor constante, o que no cambia en este problema?

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Adifferent website gives the cost for the first train as £56.88 and the second train as £20.11 with a £9.50 charge for cycle storage for the whole trip. how much would the journey cost you?

Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earn $75 in interest. how much interest will she earn during the following year?