What is bigger 1/4 or 0.4 or are they equal

Jessica has some markers. She has 5 more black markers than blue markers. She has 4 times as many red markers as black markers. She has 8 blue markers. How many markers does Jessica have altogether?

Thomas has a box with four black color bottles and eight gray color bottles. Two bottles are drawn without replacement from the box. What is the probability that both of the bottles are gray

An item is regularly priced at $50 . It is on sale for 60% off the regular price. How much (in dollars) is discounted from the regular price?

Factory a can produce 45 machinez in 20 minutes factory b can produce 30 in 15 minutes if both factories produce machines for 2 hours which factory will produce more machines? How many more will be produced? Writen in rate ratio and proportion

Brass costs $0.90 per pound, copper costs $2.15 per pound, and aluminium costs $0.75 per pound. Which medal would you recommend be for, for use as a heat sink in the tablet?

The slopes of perpendicular lines are opposite reciprocals. True False

Mr. Flanders' class sold doughnuts for $1.35 each and Mr. Rodriquez's class sold cartons of milk for $1.08 each together the classes sold 85 items and earned $104.49 for their school.

A calcium ion has 20 protons and 18 electrons. Each proton has a + 1 charge and each electron has a - 1 charge. What is the charge of the calcium ion?

You are under contract to design a storage building with a square base and a volume of 12000 cubic feet. the cost of materials is $4 per square foot for the floor, $18 per square foot for the walls and $6 per square foot for the roof.

1 / 2 y + 2 / 5 = 4 2 / 5