Find the expected number of pairs of different people, a and b, such that a picks b's name and b picks a's name. g

What fractions are equal to 9 / 12

Calculate the area of this triangle. 13 cm 5 cm 12 cm-

The area of a triangle is related to the base and height of the triangle by the formula a = bh/2. Rewrite this equation with b solved in terms of a and h.

0=-2y+10-6x and 14-22y=18x

You have a drawer with 10 individual white socks and 10 individual black socks. how many socks do you have to pull out of the drawer to guarantee you get two of the same colour?

Tyler earned $68 for babysitting 8 hours. if tyler is paid the same rate, how much will he earn for babysitting 12 hours?

Use properties to figure 107+0+39+13

At a camp, kids can choose swimming, art, or music. 40 kids choose swimming, 16 choose art, and 24 choose music. What is the ratio of kids who choose art to kids who choose swimming?

3. Nine times ten to the negative third power

Josie read 100 pages of her book last week and 146 pages this week her older brother says he read about 3 to 4 times as many total pages as Josie explain why 2,500 is not a reasonable estimate for the number of pages that Josie's brother read