Desde lo alto de un edificio es lanzada una pelota verticalmente hacia abajo con una velocidad de 5 m/s, la misma llega al suelo con una velocidad de 45 m/s. ¿Desde qué altura fue lanzada la pelota?

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Could someone with number 1 and 2

X+ y = 5 ; x - y =3 solve using linear combination