True or false x - x +0 =0

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Human body temperatures have a mean of 98.20° f and a standard deviation of 0.62°. sally's temperature can be described by z = 1.4. what is her temperature? round your answer to the nearest hundredth. 99.07°f 97.33°f 99.60°f 100.45°f

Solve for x where 0 equation: cot^2x+2cotx+1=0