Show work for brainliest. ok? a telescope is built using a hyperbolic mirror modeled by the equation (x^2)/(400) + (y^2)/(144) = 1, and a parabolic mirror that opens downward. the parabola has the vertex (-1,-4) and shares a focus with the hyperbola. what are the coordinates of the focus they share?

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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: