Find the height of a cylinder whose surface area is 1,444.4 yd^2 and the diameter is 20 yd. Also help me on number 2

Which statement most accurately describe why the division property of exponents does not apply to the expression (-8)^2/(-3)^4

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]