Agame involves tossing a biased coin that has a 60% probability of landing on heads if a player wins $50 when heads appears what is the expected value of a players winning

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

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.