forty liters of a 60% disinfectant solution are to be mixed with a 20% solutionto dilute it to a20% solution. How much of the 10% solution must be used

forty liters of a 60% disinfectant solution are to be mixed with a 20% solutionto dilute it to a20% solution. How much of the 10% solution must be used

In 2007, person A's stock portfolio decreased in value by 25%. In 2008, his stock portfolio decreased in value by another 40%. What percentage gain is required in 2009 for person A's stock portfolio...

Word problem

Compute the diffevent quotient f(x+h)-fx/h for each function below (a) f(x) =5-2x

Please help

how much 15% antifreeze should be mixed to get 50 gallons of 30% antifreeze

please help me.needed so much sir

Determine the number of sample points in the sample space.

Let’s say each once of macaroni contains 4 grams of protein and 3 grams of fat, and each ounce of salmon contains 6 grams of protein and 2 grams of fat. How many ounces of each food should be used...

If possible include a box plot and whisker plot.

1. When solving the following system of equations by using the multiply-first method, which variable is easier to eliminate, and what should the multiplier be to help eliminate that variable?...

Confused how to do with a binomial. Please help

Translate to a system of equations but do not solve. A nontoxic floor wax can be made from lemon juice and food-grade linseed oil. The amount of oil should be twice the amount of lemon...

how to find roots ?

I’m pre algebra i was asked this question.The product of 7 and a number, increased by 19 is 229? What is the number .

I am in algebra right now and I need math help. I don't know what to do on this assignment.

3 people have 139 dimes. They want to bag the coins in such a way that they can pay any amount between 1 and 139 dimes by handing over a combination of bags without looking inside them. What is the...

two companies charge different rates, company A charges a flat fee of 55$ and 12.50$ for every hour, while company B charges 31$ and 18.50$ For every hour. How long until company A is cheaper than...

I want to know how to solved it I chat seem to get the right answer

Graph the function, compare the graph to the graph of f(x)=x2 h(x)=-x2