un faro de 15 metros de altura esta al birde del acantilado. un barco se ubica en el mar y observa la parte superior con un angulo de elevación alfa y la parte superior del faro con un angulo de elevacion alfa y la parte inferior del faro con un angulo de elvacion teta, ademas se sabe que tanalfa es igual a 1,26 y tanteta es igual a 1,185 halla la altura de acantilado

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

step-by-step explanation:

it would take 7/10 of an hour too fill the pool.

step-by-step explanation: