Hi guys, please can anyone give me a hand with this problem? A signal from a mobile phone mast can be picked up by a mobile phone no more than 10 miles away. the circumference of the mobile phone reception has to be at least 55 miles. Find the range of values , to 1 decimal place, for the distance from the mast that a user would have to be able to receive a signal on their phone

thanks in advance

Standard deviation of 19,29,21,22,23

In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?

Question 5 of 10 2 points if a population is a sample of the population could be a. registered voters; all citizens o o b. baptists; all religious people o c. people who purchased shoes; all customers o d. the entire school faculty; math teachers