In , is an altitude of and also the bisector of . Prove that is isosceles. This was the question I was given. This is my work: is an altitude of . Therefore, it goes straight down from the vertex to be perpendicular with . is also a bisector of . Therefore, it cuts in half. Because cuts in half by going straight down perpendicular to , and are at the same angle to This means the triangle has two congruent angles, making it isosceles. (See Theorem 4.7 and Theorem 4.9).

i really dont know

step-by-step explanation:

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:

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step-by-step explanation: