a lottery game has balls numbered 1 through 21. what is the probability of selecting a ball with a prime number on it or a 10

Which of the fallowing best completes the sequence 5,10,15, a) 30 b) 22 c)25 d)35

In which form is the following function written? y = - 2(x – 3)(x + 5)

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?