There are approximately one billion smartphone users in the world today. In the United States, the ages of smartphone users follow approximately normal distribution with the mean of 36.9 years and the standard deviation 13.9 years. Find the percent of all smartphone users whose age is above 50 years old. Group of answer choices 16.4% 17.3% 82.7% None of these answers. 94.2%

30 points and i will give brainliest the club will base its decision about whether to increase the budget for the indoor rock climbing facility on the analysis of its usage. the decision to increase the budget will depend on whether members are using the indoor facility at least two times a week. use the best measure of center for both data sets to determine whether the club should increase the budget. assume there are four weeks in a month. if you think the data is inconclusive, explain why.

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32