Based on a sample of 30 randomly selected years, a 90% confidence interval for the mean annual precipitation (in inches) in one city is (48.7, 51.3). find the margin of error.

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Answer asap ! the shortest path from point a to point b goes through a pond. to avoid the pond, you must walk straight 34 meters along one edge of the pond, then take a 90 degree turn, and again walk straight 41 meters along another edge of the pond to reach point b. about how many meters would be saved if it were possible to walk through the pond? a. 11 m b. 20 m c. 30.45 m d. 21.73 m

What are the soultion(s) to the quadratic equation 40- x^2=0