Simplify the expression (5^-2 * 4^-4)^-2 so there is only one positive power for each base

Find the domain of the following expression: 1/(√x)-2

Me find the value of x each figure.

In the field of thermodynamics, rankine is the unit used to measure temperature. one can convert temperature from celsius into rankine using the formula , what is the temperature in celsius corresponding to r degrees rankine? a. 9/5(c - 273) b. 9/5(c + 273) c. 5/9( c - 273) d. 5/9( c + 273)