The average on the Gauss Contest for one class of 20 was an average of 55%. Turns out one of the results were incorrectly copied as 40% when it was supposed to be 80%. What is the correct mean?

Geometry: determine whether segment mn is parallel to segment kl. justify your answer. jm 6 mk 3 jn 8 nl 4

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

Darian wants to build a regulation size pool table that is 9 feet in length. he plans he ordered are 18 by 36 inches. what is the scale factor of the dilation he must use to build a regulation pool table