The ecology class would like to create a circular vegetable garden to grow various organic fruits and vegetables. One sector of the garden will need a special type of soil for growing blueberries. The students would like to put a
rock barrier between the blueberries and other vegetables to designate the area. The area of the sector of
blueberries is 247 ft2, and the central angle is - 600. Find the length of the rock barrier (i. e., the radius of the
circle).
A. r = 2 ft
B. r = 8.48 ft
C. r= 12 ft
D. r= 144 ft

Which one ? is the answer and how to find this answer

Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?

You are in charge of the customer service phone line with many employees. at the end of each phone callthe customers are asked to rate their service from 1 to 5 stars, with 5 being the best. you find the averagerating for 20 randomly selected employees and decide you want to improve the ratings so you require thoseemployees to go through a new training program. you then wait a week and find the new average rating foreach employee. the average change is an increase in 1.3 stars with a standard devation of .9 stars.(a) is this data paired or not paired? (b) what are the null and alternative hypothesis being tested? (c) what is the t-statistic you would use? write the general formula and the final calculation.(d) sketch a t-distribution, label your t-statistic and the probability you would be interested in: