The diagram shows three aid stations in a national park. choose the values of x, y, and z that could represent the distances between the stations.
a) x = 7 miles, y = 8 miles, z = 18 miles
b) x = 4 miles, y = 7 miles, z = 12 miles
c) x = 5 miles, y = 9 miles, z = 14 miles
d) x = 8 miles, y = 12 miles, z = 15 miles

Eis the midpoint of line segment ac and bd also line segment ed is congruent to ec prove that line segment ae is congruent to line segment be

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches. approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables