Is 2.78778777 ... a irational number

There are 18 fish in a 1 ft x 4 ft x 7 ft fish tank. What is the population density in the fish tank?

What is the probability that a card drawn randomly from a standard deck of 52 52 cards is a six? Express your answer as a fraction in lowest terms or a decimal rounded to the nearest millionth.

Jack has $25 to spend at the mall. whats an inequality that expresses symbolically the amount of money, M, that Jack can spend

Use technology or a z-distribution table to find the indicated area. The lengths of green beans for sale at a supermarket are normally distributed with a mean of 11.2 cm and a standard deviation of 2.1 cm. Consider a bag of 150 green beans.

Elsie wants to find the mass of her pony. which unit should she use?

What is the radius of the cone? An oblique cone has a height equal to the diameter of the base. The volume of the cone is equal to 18x cubic units. 2 units 3 units 6 units 9 units

What is 9-m=8 in inverse operation form

A pet store has a total of 45 cats and dogs. There are 9 more cats than dogs. Find the number of cats and dogs in the store.

If Abby rolls two number cubes a hundred times, about how many times would she expect a product greater than 10.

Jane is going to fence in her back yard. She has purchased 120 feet of fencing and knows that she wants to fence in a rectangular area where one side will be the back of her house. She knows her house is 25 feet across the back.