Choose the equivalent factored form for 10x^2 + 15x – 9 = 2x^2 + x – 14

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?