PLEASE HELP Solve each equation by completing the square. If necessary, round to the nearest hundredth.

10.) b2+10b=75

11.) y2-18y=63

12.) n2-20n=-75

13.) a2+16a=-15

14.) t2+8t-9=0

15.) h2-12h-9=0

Consider the function represented by the equation 1/2 j + 1/4 k equals 3 which shows the equation written in function notation with j as the independent variable

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?

Find the distance between (7,-6) and (-3,-9)