ms. keeling has eighty trick or treaters visit her house. twenty-five percent are vampires. fifteen percent are pirates. twenty percent are comics. the rest are witches or ghosts. how many of each type of costume were there?

What is the sum of 2m + 10

Use scientific notation to estimate the number of hours in one year? 1 hour = 3,600 seconds

Barbara sells iced tea for $1.49 per bottle and water for $1.25 per bottle. She wrote an equation to find the number of bottles she needs to sell to earn $100. 1.25x + 1.49 = 100 What error did Barbara make in writing the equation?

Three glasses of squash are made using cordial and water. The different mixtures are: Glass A: cordial: water = 3:22. Glass B: cordial = 1/8 of the total volume. Glass C: Cordial = 12.75% of the total volume.

If a = 42 and b = 2 then find ab

Convert 6 kilometers to yards

What is e+f/g in distributive property

Cylinder A has radius r and height h as shown in the diagram. Cylinder B has radius 2r and height 2h. How many times greater is the surface area of Cylinder B than the surface area of Cylinder A?

The triangles in the diagram are congruent. If mF = 40°, mA = 80°, and mG = 60°, what is mB?

3x-4y=65? What is the value of x? When y=4