The graph below represents the running schedule of a distance runner, who is increasing the distance she runs each week. what is the distance she will run in the ninth week? a. 22 miles b. 21 miles c. 20 miles d. 19 miles (my  

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Which of the following statements would be sufficient to prove that parallelograms pqrs is a rectangle ?