How many liters of a 90% acid solution must be added to 6 liters of a 15% acid solution to obtain a 40% acid solution?

What is a unit rate

Erika has 3 pieces of ribbon. each piece id 25 yards long. she needs to cut pieces that are 22 inches long. what is the greatest number of 22 inch pieces she can cut from the three pieces of ribbon?

A 12 - ft ladder leans against the side of a house. The bottom of the ladder is 8 ft from the side of the house. How high is the top of the ladder from the ground?

What's the numerator for the following rational expression? 4/n+8/n

Greatest to least 1.11, 0.111, 1.01, 1.001

What is the solution of this system of linear equations? y=2x-3 2x=y-3 a. infinitely many solutions b. (0, - 3) c. (0,0) d. no solution

In calm waters, the oil spilling from the ruptured hull of a grounded tanker spreads in all directions.

When does a barbershop quartet have 16 legs?

According to the model how many more pizzas are sold for each additional coupon issued

4. Haniya bought 4 polka dot pencils that each cost 70. How much money did Haniya spend?