To find the average of these 4 numbers add them together then divide by 4:

\( \frac{16 + 12 + 18 + 10}{4} \) = \( \frac{56}{4} \) = 14

To add these radicals together their radicands must be the same:

8\( \sqrt{75} \) + 4\( \sqrt{3} \)
8\( \sqrt{25 \times 3} \) + 4\( \sqrt{3} \)
8\( \sqrt{5^2 \times 3} \) + 4\( \sqrt{3} \)
(8)(5)\( \sqrt{3} \) + 4\( \sqrt{3} \)
40\( \sqrt{3} \) + 4\( \sqrt{3} \)

Now that the radicands are identical, you can add them together:

To take the square root of a fraction, break the fraction into two separate roots then calculate the square root of the numerator and denominator separately:

\( \sqrt{\frac{9}{25}} \)
\( \frac{\sqrt{9}}{\sqrt{25}} \)
\( \frac{\sqrt{3^2}}{\sqrt{5^2}} \)
\(\frac{3}{5}\)

The commutative property states that, when adding or multiplying numbers, the order in which they're added or multiplied does not matter. For example, 3 + 4 and 4 + 3 give the same result, as do 3 x 4 and 4 x 3.

To fill a 10 gallon tank exactly halfway you'll need 5 gallons of fuel. Each fuel can holds 2\(\frac{1}{2}\) gallons so:

cans = \( \frac{5 \text{ gallons}}{2\frac{1}{2} \text{ gallons}} \) = 2