Find the exact area of the surface obtained by rotating the curve about the x-axis. y = sin (x/9) , 0 ≤ x ≤ 9

For the following sequence determine the common difference (if it is an arithmetic sequence) or the common ratio (if it is a geometric sequence).

Match each statement with its corresponding value for the system below: y = -2(3)x and y = 9x - 2 1. the number of points of intersection. -2 2. the x-coordinate of the solution. 1 3. the y-coordinate of the solution. 0

Which math sentence can be used to determine if the triangle is a right triangle?