GRE
The area of the triangle
65
The time it took car G to travel x miles at the average rate of y miles per hour
The time it took car H to travel w miles at the average rate of z miles per hour
$$|a-b|$$
$$3$$
($$\sqrt{x}$$)($$\sqrt{y}$$)
$$\sqrt{x+y}$$
The radius of circle C
4
The standard deviation of data set X
The standard deviation of data set Y
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