Ntegrate f (x comma y )equalsstartfraction ln (x squared plus y squared )over startroot x squared plus y squared endroot endfraction over the region 1 less than or equals x squared plus y squared less than or equals e superscript 8.

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)