There are many penguins on a hill. 53 penguins waddled off the hill. Now 21 penguins remain on the hill. How many penguins were on the hill to start?

74 penguins

72 penguins

32 penguins

34 penguins

Popcorn kernels pop independently (i. e. unimolecularly). For one brand at constant temperature, 12 kernels pop in 5 seconds when 235 kernels are present.

An aquarium shaped like a rectangular prism has a length of 24 inches, a width of 12 inches and a height of 18 inches. You fill the aquarium half full of water. When you submerge a rock in the aquarium, the water level rises 0.5 inch.

An adult ticket cost 20 dollars a piece for2 adults and 10 a piece for 4 children how much will cost for everyone

On a map, 1 in. represents 12 mi. Two cities are 6 1/2in. apart on the map. How far apart are the actual cities? A. 78 miles B. 72 1/2 miles C. 72 miles D. 18 1/2

I have a math question. Two fielda ats state park are 1000 meters from each other. On a map, the two fields are 8 centimeters apart. What scale is the map using? Is it the metric scale?

Valerie tells Robbie, "I'm thinking of a number between 1 and 50. If I divide the number by 4, then add 5, then subtract 6, I get 6."

Gary found 72 shells and 40 coins at the beach. He wants to give them to some of his friends. Each friend will receive the same number of shells and the same number of coins.

One hundred is multiplied by a number between 0 and 1. the answer has to be?

What is 4/12 equal to

At a restaurant, the bill comes to $30. If you decide to leave a 14% tip, how much is the tip?