In ΔXYZ, z = 81 cm, ∠Y=139° and ∠Z=6°. Find the length of y, to the nearest 10th of a centimeter.

Grandma made an apple pie. josh and his brother joe finished 4/5 of it. then 3 friends came over and shared the left over. how much pie did each friend eat

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

If the discriminant if a quadratic equation is 4 which statement describes the roots?