Apiggy bank contains 100 coins consisting of nickels and dimes. the total vale of the coins is $8.50
part a:
write a system of equations to be used to determine how many coins of each type does the bank have?
part b:
how many coins of each type does the bank contain?

The distributive property allows you to say that 3(x − 1) = 3x −

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.