The value of $\frac{(0.013)^3 + 0.000000343}{(0.013)^2 - 0.000091 + 0.000049} $

The value of $\frac{(2.3)^3 - .027}{(2.3)^2 + .69 + .09}$ is

The value of $\frac{(0.06)^2 + (0.47)^2 + (0.079)^2}{(0.006)^2 + (0.047)^2 + (0.0079)^2}$ is

$\frac{(4.53 - 3.07)^2}{(3.07 - 2.15)(2.15 - 4.53)} + \frac{(3.07 - 2.15)^2}{(2.15 - 4.53)(4.53 - 3.07)} + \frac{(2.15 - 4.53)^2}{(4.53 - 3.07)(3.07 - 2.15)}$ is simplified to

If $a = \frac{x}{x + y}$ and $b = \frac{y}{x - y}$, then $\frac{ab}{a + b}$ is equal to

If $\frac{a}{b} = \frac{1}{3}$, $\frac{b}{c} = 2$, $\frac{c}{d} = \frac{1}{2}$, $\frac{d}{e} = 3$ and $\frac{e}{f} = \frac{1}{4}$, then what is the value of $\frac{abc}{def}$?

If $\frac{m}{n} = \frac{4}{3}$ and $\frac{r}{t} = \frac{9}{14}$, the value of $\frac{3mr - nt}{4nt - 7mr}$ is

If $x = \frac{a}{a - 1}$ and $y = \frac{1}{a - 1}$, then

If $0 < a < 1$, then the value of $a + \frac{1}{a}$ is

If $a + b + c = 0$, find the value of $\frac{a^2}{(a^2 - bc)} + \frac{b^2}{(b^2 - ca)} + \frac{c^2}{(c^2 - ab)}$.