Determine if the ordered pair (1/2,-1/2) is a solution to linear system 4x + y = -1
7x - 3y = 4

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Which expression gives the exact value of x?