Fred sold half of his comic books and then bought 7 more. He now has
11. How many did he begin with ?

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Which expression gives you the distance between the points (5,1)and(9,-6)

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c