Aroad sign is in the shape of a regular pentagon. what is the measure of each angle on the sign? round to the nearest tenth

Multiply. −2x(6x4−7x2+x−5) express the answer in standard form. enter your answer in the box.

At which value in the domain does f(x) =0?

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?