The following steps are used to rewrite the polynomial expression (x+2y)(x-5y) step 1: x(x-5y)+2y(x-5y). step 2: x^2-5xy+2yx-10y^2. step 3: x^2-5xy+2xy-10y^2. step 4: x^2-3xy-10y^2 identify the property used in each of these steps.

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

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?