Transform the following vectors into cylindrical coordinates and then evaluate them at the indicated points: a = x(x + y) at p_1 =(1,2,3) b = x(y-x) + y(x-y) at p_2 = (1,0,2) c = xy^2/(x62 + y^2) - yx^2/(x^2 + y^2) + z4 at p_3 = (1,-1,2) d = r sin theta + theta cos theta + phi cos^2 phi at p_4 = (2, pi/2, pi/4)

Angel entered a triathlon (a three-part race). he swam 1 mile, rode his bike 30 miles, and ran 10 miles. how far did he go altogether? a. 11 miles b. 123 miles c. 41 miles d. 40 miles

One month, a music site observed that 60% of the people who downloaded songs from its site downloaded q sam's latest single. the equation below represents this information, where x represents the total number of people who ddownloaded songs from the site that month: x = 0.6x + 384 how many people who downloaded songs from the site that month downloaded q sam's latest single?

Sarah used her calculator to find sin 125 degrees. she wrote down sin sin125 degrees.57. how could sarah recognize that her answer is incorrect?