Given the quadratic expression, find the value of C to complete the square. Then write the expression as a binomial squared. x^2-18x+C​

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

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%

Use circumcenter theorem to solve for the given values