Two students are observing a hot air balloon. The balloon is attached to the ground by a rope that is 50 feet long. Student A 60 feet away from where the rope is attached to the ground. Student B observes the balloon at an angle of elevation of 60The diagram below represents this situation.

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?