GRE
a
b
The area of a rectangular region that has a perimeter of 20 inches
20 square inches
|x|
$$x^{2}$$
The least possible value of $$\frac{3x-4}{y+7}$$
$$\frac{2}{5}$$
x
y
The range of the absolute deviations of the values in W from the mean
5
25000 +道题目
236本备考书籍