Four brothers invested in a restaurant. one brother invested $140000. two brothers invested in the ratio x: 2x, and the fourth brother invested an amount equal to the three brothers combined. the total investment was $1600000. how much did each brother invest?

y=2x−1 5x−4y=1 is (1,1)(1,1) a solution of the system?

Aline has a slope of negative 1/4 the past two points -5/4 and 1 what is the equation of the line

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