At a city water purification plant, water is mixed with a release agent in a ratio of 8: 1. you are using 32 ounces of water. how many ounces of the release agent should you mix with the water?

We have been given that at a city water purification plant, water is mixed with a release agent in a ratio of 8:1.

Let x be amount of release agent that should be mixed with the 32 ounces of water. We can write an equation by our given information as:

Upon cross multiplication we will get,

Therefore, we should mix 4 ounces of the release agent to 32 ounces of water.

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!