Simplify (12 − 6i) − (−3 − 8i). (with explanation if you could) a. 15 + 2i b.15 − 14i c.13 d.17

Find the value of x for which abcd must be a parallelogram -9-6x x-30

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?

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0