Let fequals=left angle x comma y right anglex, y and c be the triangle with vertices (0,plus or minus±33) and (11,0) oriented counterclockwise. evaluate contour integral subscript upper c superscript baseline bold upper f times d bold r∮ cf•dr by parameterizing c. use a parametric description of c and set up the integral. contour integral subscript upper c superscript baseline bold upper f times d bold r∮ cf•drequals=integral from 0 to 1 left parenthesis nothing right parenthesis dt

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

Astudy was interested in determining if eating milk chocolate lowered someone's cholesterol levels.ten people's cholesterol was measured. then, each of these individuals were told to eat 100g of milk chocolate every day and to eat as they normally did. after two weeks, their cholesterol levels were measured again. is there evidence to support that their cholesterol levels went down? how should we write the alternative hypothesis? (mud = the population mean difference= before - after)a. ha: mud = 0b. ha: mud > 0c. ha: mud < 0d. ha: mud does not equal 0