Terrance and jesse are training for a long-distance race. terrance trains at a rate of 6 miles every half hour, and jesse trains at a rate of 2 miles every 15 minutes

1. what is the unit rate in miles per hour for each runner?

2. how long will each person take to run a total of 50 miles at the given rates?

3. sandra runs at a rate of 8 miles in 45 minutes. how does her unit rate compare to terrance's and to jesse's?

Determine if the following statement is true or false. the normal curve is symmetric about its​ mean, mu. choose the best answer below. a. the statement is false. the normal curve is not symmetric about its​ mean, because the mean is the balancing point of the graph of the distribution. the median is the point where​ 50% of the area under the distribution is to the left and​ 50% to the right.​ therefore, the normal curve could only be symmetric about its​ median, not about its mean. b. the statement is true. the normal curve is a symmetric distribution with one​ peak, which means the​ mean, median, and mode are all equal.​ therefore, the normal curve is symmetric about the​ mean, mu. c. the statement is false. the mean is the balancing point for the graph of a​ distribution, and​ therefore, it is impossible for any distribution to be symmetric about the mean. d. the statement is true. the mean is the balancing point for the graph of a​ distribution, and​ therefore, all distributions are symmetric about the mean.