Which of these is equal to cos 19°?

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Cody ran nine miles on his first day of training. the next day he ran 1/8 that distance. how far did he run the second day?