Arestaurant has one type of lemonade that is 30% sugar and another that is 10% sugar. how many gallons of eachbtype does the restraint need to make 4 gallons of lemonade mixture that is 15% sugar?

x + y = 4

0.3x + 0.1 y = 0.15*4

Solve the system. The solution is: x = 1 ∧ y = 3

1 gallons with 30% sugar and 3 gallons with 10% sugar does the restaurant need.

step-by-step explanation: h: (- 3, 6)

m: (1, - 2)

o: (7, 6)

r: (- 9, - 2)

midpoint of hm: (- 1, 2)

midpoint of or: (- 1, 2)

therefore, b is the midpoint of both diagonals bisect each other !

to prove the diagonals are perpendicular, show that the product of the slopes = - 1