Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a rectangle?
shape abcd is shown. point a is at 5, 5. point b is at 7, 3. point c is at 3, 0. point d is at 1, 2.
a. prove that segments ad and ab are congruent and parallel
b. prove that opposite sides are congruent and that the slopes of consecutive sides are equal
c. prove that segments bc and cd are congruent and parallel
d. prove that all sides are congruent and the slopes of consecutive sides are opposite reciprocals

50=33x+22

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:

no

step-by-step explanation:

answer

1st part is 64,000,000

2nd part 500,000

step-by-step explanation: