Adding negative numbers

7 + (-7) =

The rule for the number of fish in a home aquarium is 1 gallon of water for each inch of fish length. Marta's aquarium holds 22 gallons of water and Hank's aquarium hold 32 gallons of water. The aquarium holds two types of fish, fish A and fish B.

If x = 4 and y = 8, evaluate the following expression: x/y Give your answer as a fraction in its simplest form.

Raj is a dog walker. He charges $85 walking fee and $20 per dog, with the first dog free. Which equation could you use to calculate the cost, c, to have Raj walk d dogs?

If there are 25 cats and the ratio of cats to dogs is 5 : 3, how many dogs are there?

88 : (11. 2) : 4 find the value of this expression

a metal strip is being installed around a workbench that is 7 feet long and 3 feet wide. find how much stripping is needed

Evaluate 3 + (-h) + (-4) where h = - 7.

Suppose you have a distribution, x, with mean = 6 and standard deviation = 2. define a new random variable y = 8x - 3. find the mean and standard deviation of y.

Whats the answer x (a+b) + 2 (a+b)

The media center at josh's school has a computer area. the first 4 rows have 6 computers each. the fifth row has 4 computers. how many computerz are there?