During 1997, a researcher selected a random sample of women who lived in a particular county in 1992. Examining the medical records, the researcher found that of 674 women who were diagnosed with breast cancer in 1992, 88% of the Caucasian women and 83% of the African American women were still alive in 1997. Determine whether this investigative study is retrospective or prospective.

What term best describes a line ans a point that lie in the same plane

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?

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