the ratio of yellow balloons to red balloons is 2;1 respectively. if there are 7 red balloons how many yellow balloons are there

The expression 6x2 gives the surface area of a cube, and the expression x3 gives the volume of a cube, where x is the length of one side of the cube. find the surface area and the volume of a cube with a side length of 6m

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?