Ewa has 20 balls of four colors: yellow, green, blue, and black. 17 of them are not green, 5 are black, and 12 are not yellow. how many blue balls does ewa have?

One number is 5 times a first number. a third number is 100 more than the first number. if the sum of the three numbers is 604 , find the numbers.

Which is larger 2 L or 1 GL

Andre wants to make an open box by cutting out corners of a 22 inch by 28 inch poster board and then folding up the sides. The volume V (x) in cubic inches of the open top box is a function of the side length x in inches of the square cutouts.

Which is colder - 3 - 12 - 8 - 15

An architect is designing a building. Each floor will be 12 feet tall Write an expression for the number on the building can be found

Factor the expression using GCF 16p - 8

A group of 4 44 friends is playing cards. The deck has 70 70 cards. To start the game, the dealer makes a pile of 15 15 cards in the center. Then she deals the remaining cards one at a time to each player until all the cards are gone.

the scale of a map is 1 1/2 inches = 50 inches. on the map, 2 rivers are 7 1/2 inches apart. what is the distance between the two rivers?

An engineer estimated the weight of a steel beam to be 600 pounds. The actual weight of the beam was 639 pounds. Find the absolute error and the percent error of the engineer's estimate. If necessary, round your answers to the nearest tenth.

Marta measured the temperature as 65°F. What is the margin of error? a. 60°F to 70°F b. 64°F to 66°F c. 64.5°F to 65.5°F d. 65.5°F to 66.5°F