Barry bought 21 stamps from a hobby shop. he gave 3/7 of them to his sister, how many stamps did he have left?

Determine the number of solutions for the system of equations y=2/3x+4 and y=2/3-x2

Find the difference 9x2-24x2

The sum of the ages of a mother and a daughter is 32 years, and the age of the mother is seven times that of the daughter. what is the age of each

An animal shelter house only cats and dogs and there are 25% more cats than dogs if there are 40 cats how many dogs are there and how many animals are there total

A local hamburger shop sold a combined total of 561 hamburgers and cheeseburgers on sunday. There were 61 moore cheeseburgers sold than hamburgers were sold

If the perimeter of an equilateral triangle is 24 inches, find a side of the triangle

3x-2y=-2 6x-2y=10 solve by elimination

A marketing firm is studying consumer preferences for winter fashions in four different months. From a population of women, 18-21 years of age, a random sample of 100 women was selected in January.

Which is bigger 15%or 1/5?

What is - 10=xy+z for x?