GRE
The perimeter of △ABO
The length of arc BCD
3x+4y
8
The area of the region enclosed by the pentagon shown
$$\frac{7}{2}S$$
$$x+y+z$$
$$\frac{1}{x+y+z}$$
$$\frac{1}{2}(x+y)$$
$$\frac{1}{2}x + y$$
The radius of $$C_1$$
Twice the radius of $$C_2$$
In the xy -plane, the slope of the line containing the points (a, b) and (0, 2)
In the xy -plane, the slope of the line containing the points (a, b) and (2, 0)
The standard deviation of the 3 numbers x, x+1, and x+70
The standard deviation of the 3 numbers x+ 10, x+11, and x+80
25000 +道题目
236本备考书籍