There are 10 boys and 20 girls in mrs brook's class.
mrs brook gave all the class a test.
the mean mark for all the class is 60
the mean mark for the girls is 56.
work out the mean mark for the boys.

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

Eight people were asked what the balance of their savings account at the beginning of the month was and how much it increased or decreased by the end of the month. create a scatter plot that represents the data that is shown in the table. the x-axis represents the beginning balance in thousands of dollars and the y-axis represents the change in the savings account in hundreds of dollars. name beginning balance (in thousands of dollars) change in savings account (in hundreds of dollars) jimmy 5 3 kendra 4 7 carlos 5 4 yolanda 3 1 shawn 2 5 laura 3 2 andy 5 6 georgia 4 3

What is the probability of drawing three queens from a standard deck of cards, given that the first card drawn was a queen? assume that the cards are not replaced.