A una estación de servicios llegan usuarios con una tasa de 45 usuarios cada 60 minutos, si la llegada de usuarios a dicha estación sigue una distribución Poisson, responda las siguientes preguntas:

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Hay 80 aspirantes, (mujeres, M y hombres, H) para un trabajo, 20 son integrantes del grupo A, 25 del grupo B y 35 del grupo C. Los números de mujeres (M) en los tres grupos son 4 en el grupo A, 14 en el grupo B y 24 en el grupo C. Una persona es seleccionada al azar para cubrir el puesto. Calcule las sguientes probabilidades:

Avui per esmorzar hem menjat 20800 J. Si el nostre organisme té un rendiment del 28% en esforç muscular i hem anat a escalar, quants metres podrem pujar per “cremant” tot l’esmorzar si pesem 79 Kg? (Sense fregaments.)

Un cotxe té una potència màxima de  97 CV. La seva velocitat màxima és de 150 Km/h.  Quina és la força de fregament que rep el cotxe? (Escriu el mòdul, sense signe).

Яке призначення має частина зброї, що позначена на малюнку цифрою 12?