Aweather balloon is launched from the ground at a spot 250 yards from a 65 foot royal palm tree. what is the minimal angle of elevation at which the balloon must take off in order to avoid hitting the tree? assume that the balloon flies in a straight line and the angle of elevation stays constant.

Find dy/dx using implicit differentiation ln(20+e^xy)=y

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

Now max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.