Analyze Osvaldo’s work to determine where he made an error and what his error was. In step 1, he had to add 2w to both sides.
In step 1, he had to divide both sides by 2w .
In step 2, he had to divide both sides by 2.
In step 2, he had to subtract 2 from both sides.

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?