Evaluate the integral by making an appropriate change of variables. 7(x y ex2 ? y2 da, r where r is the rectangle enclosed by the lines x ? y = 0, x ? y = 10, x y = 0, and x y = 4

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Use multiples to write two fractions equivalent to 7/9. 14/18, 8/10 6/8, 21/27 10/12, 28/36 14/18, 21/27

Madeline takes her family on a boat ride. going through york canal, she drives 6 miles in 10 minutes. later on as she crosses stover lake, she drives 30 minutes at the same average speed. which statement about the distances is true?