What are the mathematical expressions shown in the image?

The image contains several mathematical expressions. Based on the visual representation, they appear to be:

1. A fraction with a radical in the numerator and a variable in the denominator: \(\frac{\sqrt{3x}}{9-x}\)
2. A term with a base and an exponent: \(x^{-2}\)
3. A number followed by a degree symbol and a multiplication sign, then another number: \(162^{\circ} \cdot 6\)
4. A number with a degree symbol, possibly part of an angle measurement or a coefficient: \(162^{\circ}\)
5. A variable with a coefficient: \(5x\)
6. Possibly another fraction or a part of a larger expression: \(\frac{1}{2}\)

Note: The exact context and intended operations are unclear without further information, as the expressions are presented in isolation.