What is x when 90 divided by x equals 11?

To find the answer, just divide the dividend by the quotient: 90 ÷ 11 = 8.1818181818182

To prove this, let's compute 90 divided by 8.1818181818182: $\frac{90}{8.1818181818182} = 11$

How does it work?

Asking what the value of x could be when 90 divided by x gives a result of 11, is equivalent to solving the following equation:

$\frac{90}{x} = 11$

Multiply both sides by x: $\frac{90 x}{x} = 11 x$
$\frac{90 x}{x}$ is equivalent to $\frac{x}{x} \times 90$ , which simplifies to $1 \times 90$ (or just $90$ ).
Thus, the equation becomes: $90 = 11 x$
To find x, divide both sides by 11: $\frac{90}{11} = \frac{11 x}{11}$
Which gives, after simplification: $8.1818181818182 = x$ (or $x = 8.1818181818182$ )

So, if the dividend is 90 and the quotient is 11, the divisor is 8.1818181818182.