The distribution of weights of a large group of high-school boys is normal with a mean of 120 pounds and a standard deviation of 10 pounds. What is the probability of a randomly selected high-school boy will have a weight of at most 145 pounds?

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

An airport in death valley is 60 feet below sea level, and an airplane is flying 2,000 feet above sea level. how many feet must the plane descend in order to land? a. 2060 b. 2000 feet c. 1940 feet d. 1880 feet e.1400 feet will mark as brainliest

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left