Help on #19,21,23,25,27,29
Js give me the answers not the whole work

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

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.

I’m still confused on how to work the percentages