un corredor de maratón ha avanzado 2 km en los primeros 8 minutos de su recorrido. si mantiene la velocidad después de los 8 minutos:¿cuanto tiempo tardará en completar los 42 km del recorrido?​

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

1: 4 if the wew 35 surfboards at the beach how many were short boards?