Plz how can you use the fact that right triangles have perpendicular sides to determine if the (x, y) coordinates of a triangle’s three vertices represent a right triangle?

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).

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.