Real Number System

Select all the number sets that 30 belong to.

Select all the number sets that -11 belong to.

Select all the number sets that $$-\ \sqrt[]{9}$$ belong to.

Select all the number sets that $$\sqrt[]{17}$$ belong to.

Select all the number sets that $$\sqrt[]{15}\div\ \sqrt[]{15}$$ belong to.

Select all the number sets that -2.85 belong to.

Select all the number sets that $$6\div3$$ belong to.

Select all the number sets that $$5\frac{3}{7}$$ belong to.

Select all the number sets that $$3\pi$$ belong to.

Select all the number sets that $$0$$ belong to.

Identify the property:

$$3^2=9\ and\ 9\ =\sqrt[]{81},\ then\ 3^2=\ \sqrt[]{9}$$

Identify the property:

$$8\ +\ \left(2\ +\ n\right)\ =\ \left(8+\ 2\right)\ +\ n$$

Identify the property:

$$If\ 5x\ =\ 30,\ then\ 30\ =\ 5x$$