What is x when 13 divided by x equals 43?

To find the answer, just divide the dividend by the quotient: 13 ÷ 43 = 0.30232558139535

To prove this, let's compute 13 divided by 0.30232558139535: $\frac{13}{0.30232558139535} = 43$

How does it work?

Asking what the value of x could be when 13 divided by x gives a result of 43, is equivalent to solving the following equation:

$\frac{13}{x} = 43$

Multiply both sides by x: $\frac{13 x}{x} = 43 x$
$\frac{13 x}{x}$ is equivalent to $\frac{x}{x} \times 13$ , which simplifies to $1 \times 13$ (or just $13$ ).
Thus, the equation becomes: $13 = 43 x$
To find x, divide both sides by 43: $\frac{13}{43} = \frac{43 x}{43}$
Which gives, after simplification: $0.30232558139535 = x$ (or $x = 0.30232558139535$ )

So, if the dividend is 13 and the quotient is 43, the divisor is 0.30232558139535.