What is the explicit rule for the geometric sequence? 400, 200, 100, 50,...

(I'll put the answers in a screenshot) Plzz help :(

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?

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

What is the measure of sty in oo below? 130 310 230 50