30 points! pls help Josh works for The Milkshake Diner. The company wants to know which milkshake flavor is the most popular. Today, he surveyed every third female customer on their favorite milkshake flavor. Twenty-two customers (out of 72 total) were surveyed, and 7 customers prefer ChocoChocolate, 4 customers prefer VeryStrawberry, and 11 customers prefer BananaBoBanna.

What type of sampling is demonstrated in the situation above?
A.
census
B.
convenience sampling
C.
random sampling
D.
negative sampling

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

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?