3/7 de los estudiantes en una escuela están en sexto grado. Si la escuela tiene x estudiantes, escriba una expresión para el número de estudiantes de sexto grado en términos de x.

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?