PLEASE HELP ASAP!! Find the range of allowable values based on an expected mass of 250 grams for which values are allowed to vary by 5%.

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?

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

Write the point-slope form of an equation of the line through the points (-2, -3) and (-7, 4).