Ineed !

i need to determine the roots of each quadratic equation by compleating the square, then it says to round to the nearest

x²-2x-4=0

how! ? 12 !

also pls provide step by step so i can do this on my own!

In a sample of 200 residents of georgetown county, 120 reported they believed the county real estate taxes were too high. develop a 95 percent confidence interval for the proportion of residents who believe the tax rate is too high. (round your answers to 3 decimal places.) confidence interval for the proportion of residents is up to . would it be reasonable to conclude that the majority of the taxpayers feel that the taxes are too high?

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*