Achemical company mixes pure water with their premium antifreeze solution to create an inexpensive antifreeze mixture. the premium antifreeze solution contains 90% pure antifreeze. the company wants to obtain 180 gallons of a mixture that contains 70% pure antifreeze. how many gallons of water and how many gallons of the premium antifreeze solution must be mixed?

40 gallons of water and 140 gallons premium antifreeze

Step-by-step explanation:

Let p represent the number of gallons of premium antifreeze in the mix. Then 180-p is the number gallons of water. The amount of pure antifreeze in the mix is then ...

0.90p + 0·(180 -p) = 0.70·180

p = 0.70·180/0.90 = 140 . . . . divide by the coefficient of p

180-p = 40 . . . . . find the water content

40 gallons of water and 140 gallons of premium antifreeze are in the mix.

heyyy

step-by-step explanation:

median is the value separating the higher half of a data sample, a population or probablity distribution from the lower half.

step-by-step explanation:

say you have 3,8,7,3,1,9,8 order them from lowest to highest

if orderd it would be 1,3,3,7,8,8,9 now you take away from the lowest and the highest until you end up in the middle.

so you would remove the 1 and 9 leaving you with 5 digits remaining

when you've reached the middle that would be your answer so in this case the answer is 7

if there were two numbers left say 7 and 5 you'd and them together so 12 then divide by 2 witch would equal 6 so the answer would be 6

good luck on that project hoped i you at all