Please help me Answer this :)
( Will give brainlst!!)

<3

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

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible