Im trying to do IXL and I dont understand the way my teacher teaches (ironic right?) the points (-2,-10) and (8,r) fall on a line with a slope of 1/10. What is the value of r?

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

What type of symmetry does a rhombus have?

Zack and tia played chess for 50 min they put the chessboard away at 11: 20 when did they start