This does not make sense, pleas me

1- identificar select the category that corresponds to each term. january 23 11: 59 pm unlimited attempts remaining grade settings 276-279 vocabulary list modelo fiesta quinceañera casada adolescencia viudo juventud navidad niñez vejez aniversario de bodas divorciado madurez cumpleaños soltera

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?