What is x when 72 divided by x equals 10?

To find the answer, just divide the dividend by the quotient: 72 ÷ 10 = 7.2

To prove this, let's compute 72 divided by 7.2: $\frac{72}{7.2} = 10$

How does it work?

Asking what the value of x could be when 72 divided by x gives a result of 10, is equivalent to solving the following equation:

$\frac{72}{x} = 10$

Multiply both sides by x: $\frac{72 x}{x} = 10 x$
$\frac{72 x}{x}$ is equivalent to $\frac{x}{x} \times 72$ , which simplifies to $1 \times 72$ (or just $72$ ).
Thus, the equation becomes: $72 = 10 x$
To find x, divide both sides by 10: $\frac{72}{10} = \frac{10 x}{10}$
Which gives, after simplification: $7.2 = x$ (or $x = 7.2$ )

So, if the dividend is 72 and the quotient is 10, the divisor is 7.2.