At noon, a tank contained 10 cm of water. after several hours, it contained 7 cm of water. what is the percent decrease of water in the tank?

Convert 0.87 into a fraction

the equation 1.5r+15=2.5r represents the number r of movies you must rent to spend the same amount at each movie store. how many movies must you rent to spend the same amount at each movie store?

How many liters of a 50% acid solution must be mixed with a 10% acid solution to get 280 L of a 40% acid solution

Evaluate the expression. If necessary, round to the nearest hundredth. log 8 .90 2.08 8

Caleb purchases 5 beach towels for d dollars each. Each towel is charged an additional 6% sales tax. Which expressions can Caleb use to find the total cost of all 5 towels? Select each correct answer. 5.3d 5d + 0.3d 5 (d+0.06d) 5d + 0.06d

Which of the following statements is false? A. Whole numbers are never irrational. B. There are no integers that are whole numbers. C. There is only one whole number that is not a natural number. D. Natural numbers cannot be negative.

What is bigger 2/4 or 5/8

Which of the following numbers is a whole number? 1.) 0.3 2.) - 2/3 3.) - 8 4.) 3

What is the volume of a cubic crystal with one face that has an area of 9 cm²?

A cylindrical tank with a radius of 10 ft and a height of 40 ft is filled with gasoline. given a density of 670 kg/m 3, determine the mass (lbm) of the gasoline in the tank.