How many liters of a 12% acid solution must be mixed with 5 liters of a 20% acid solution to give a 14% solution?

The two expression(x+y)^2 and x^2+y^2 are equal for all real numbers x and y. Is this statement true or false?

jen has gone to 35 second hand stores which is 70% of total stores. How many total are there?

Jim saw some pentagons. The pentagon had a total of 100 sides. How many pentagons did Jim seesrr

Pizza comes in 3 kinds of crusts with any combination of different toppings. The ad says there are almost 200[..]

because 2x^3-x+5 divided by x+1= 2x^2-2x+1 with a remainder of 4 it follows that 2x^3-x+5=

the length of an office is x feet and the width is x+4 feet. write the polynomial that represents the area. find the[..]

Sarah and flora won the science fair. Sarah worked 2 1/3 hours on their project, and flora worked 1/2 hour more than[..]

the total value of nickles and dimes in a coin bank is $5.00 if the nickles were dimes and the dimes were nickles[..]

Greg has Q quarters and P pennies. His brother has 4 times as many quarters and 8 times as many pennies as Greg[..]