Richard and Teo have a combined age of 30. Richard is 9 years older than twice Teo's age. How old are Richard and Teo?

Which of the following circles have their centers on the x-axis? check all that apply.

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c =

Full year - williamshow many square inches are in 60 square feet? 5 square inches72 square inches720 square inche8.640 square inches