to reduce 56 grams of a 70% antiseptic solution, to a 20% solution how much distilled water should a pharamasict add?

140 grams

Step-by-step explanation

Let n be the amount of distilled water needed. Then:

.7(56)=.2(56+n)

39.2=11.2+.2n

.2n=28

n=140 gram distilled water

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

found it xd it ok yt