Picking a month of the year and tossing a coin

What was the annual growth rate for Egypt in 1990? What is the estimated annual growth rate in 2010? Be sure to show your work for each answer.

Simplified version of 4x+2-1/2x

How can you express (15 30) as a multiple of a sum of whole numbers with no common factor?

How many strings of 5 lower case English letters are there that have the letter x in them somewhere? Here strings may use the same letter more than once. (Hint: It might be easier to first count the strings that don't have an x in them.)

At the factory a baseball card is places in every 9th cereal package a football card is placed in every 25th package what is the first package that gets both the baseball and football card

Find the mean of 7 numbers if the mean of the first 4 numbers is 5 and the mean of the last 3 numbers is 12. What is the mean of the combined data sets?

1/2 (8-4x) Simplify using distributive property

I am thinking of a number. if you divide my number by 3 and add - 3 you get 4 what is my number

Divide. 4.8 : 10,000 Enter your answer as a decimal in the box.

Mr. Johnson has a garden in the shape of a kite with a length of 5 feet and a width of 4 feet. A bag of topsoil covers 10 square feet. A kite has a length of 5 feet and a width of 4 feet. The area of each triangle is ft2.