This is for union and intersection. i need . #11-20: find the following sets. u = {1,2,3,4,5} a = {1,2,3} b = {5} 11) a’ = {4,5} 12) b’ = {1,2,3,4} 13) ∪ = {1,2,3,5} 14) ′ ∪ ' = {1,2,3,4,5} 15) ∩ = { 16) ′ ∩ ′ = {4} 17) ′ ∩ = { 18) ∩ ′ 19) ′ ∪ 20) ∪ ′

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?

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte