Your classmate simplified the following rational expression and asked you if you got the same answer. determine whether the answer below is correct. if it is not correct, simplify the expression. show all of your work.
rational expression: x squared minus 1, over x squared minus 4x minus 5, divided by 2x squared plus 4 x, over 6x squared minus 30x
your friend's 2x times the quantity x minus 1 times the quantity x plus 2, all over 6x times the quantity x minus 5 times the quantity x minus 5

The correlation coefficient between the number of students and marks obtained in end semester exam. (13 marks) give the statistical meaning of the relationship between the number of students and marks b. obtained in end semester exam. (3 marks) draw the number of students and marks obtained in end semester exam scatter diagram c. (4 marks) check list write your name and id corectly write the question number properly use your own calculator. show all the steps to solve the problems. use the correct formula. answer in provided time. don't use your mobile for any purpose. write your answer up to two decimal places