David debe realizar cinco pruebas escritas, en las cuatro primeras ha obtenido 34, 65, 55 y 40 puntos, si ha de obtener una media de 50 puntos, ¿cuál debe ser su puntuación en la quinta prueba?

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step-by-step explanation:

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answer: i literally just answered this question but they want me to do it again

step-by-step explanation:

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.