A store sells two types of cleaning solutions. Brand X has 4 mL of white vinegar for every 20 mL of water. Brand Y has 5 mL of white vinegar for every 30 mL of water. Which mixture has a higher concentration of vinegar?

The mixture of Brand X has a higher concentration of vinegar

Step-by-step explanation:

Concentration

The concentration of a solution measures the amount of solute that has been dissolved in a given amount of solution. The question states the white vinegar is the solute and water is the solvent to produce the mix or solution.

The concentration can be calculated with the formula:

Brand X has 4 ml of white vinegar for every 20 ml of water. The total solution is 4 + 24 = 24 ml. Thus:

Brand Y has 5 ml of white vinegar for every 30 ml of water. The total solution is 5 + 30 = 35 ml. Thus:

The mixture of Brand X has a higher concentration of vinegar

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

step-by-step explanation:

for the free