the following table shows the probability distribution for a discrete random variable. X- 11,14,16,19,21,23,24,29 P(X)- 0.07,0.21,0.17,0.25,0.05,0.04,0.13, 0.08. what is the mean of this discrete random variable? (that is, what is E(x), the expected value of X?) A) 18.59 B) 19.625 C) 19 D) 20

Jamie is hiking up a small mountain. he climbs up at a constant rate of 300 feet/hour until he reaches the peak at 1,500 feet. after that, he hikes down at the same rate to the base of the mountain. the equation that models jamie’s elevation, e, after t hours is e = . jamie’s elevation will be 600 feet after hours and after hours.

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Just tell me how to set up the equation.