Solve matrix equation
3[ matrix x+2\\ y-3 matrix ]+[ matrix 5\\ -4 matrix ]= 1 2 [ matrix 7\\ 1 matrix ]

Sum is 17 and their difference is 3

If a distance of 75 yds is measured back from the edge of the canyon and two angles are measured , find the distance across the canyon angle acb = 50° angle abc=100° a=75 yds what does c equal?

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site