Can someone help with my geometry hw?marking brainliest :D

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 360, a standard deviation of 4, and a margin of error of 2.5%

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0