En un triangulo rectangulo la hipotenusa mide 15cm y el cateto mide 12cm calcula la longitud de otros catetos y la medida de sus angulos

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?