Valuate the line integral Integral from Upper C to font size decreased by 10 gradient phi times d Bold r for the following function phi and oriented curve C (a) using a parametric description of C and evaluating the integral directly, and (b) using the Fundamental Theorem for line integrals. phi(x, y)equalsxy; C: r(t)equalsleft angle cosine t comma sine t right angle, for 0less than or equalstless than or equalsStartFraction pi Over 4 EndFraction (a) Set up the integral used to evaluate the line integral using a parametric description of C. Use increasing limits of integration. Integral from nothing to nothing (nothing )dt (Type exact answers.)

Use multiples to write two fractions equivalent to 7/9. 14/18, 8/10 6/8, 21/27 10/12, 28/36 14/18, 21/27

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?

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?