The table shows the heights of students in a group. student height (in inches) a 49 b 47 c 46 d 45 e 53 what is the mean height of the students in the group? 46 inches 48 inches 51 inches 53 inches

Me. i can't figure out this question. give an explanation too. .

Abcd is a square. what is the measure of angle bac

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?