Sarah practices the piano 1/3 hour in the morning, 5/6 hour in the afternoon, and 4/5 hour in the evening. How many hours did Sarah practice in all?

Enter your answer as a mixed number in SIMPLEST form.

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.

Which of the following describes the symmetry of the graph of y = x3?

Aquadratic equation in standard from is written ax^2= bx+c, where a, b and c are real numbers and a is not zero?