Meredith's class has 21 students. meredith rides the bus home with 2/3 of the students in her class. how many students in meredith's class do not ride the bus home with her?

Given the following statements, which is the best

Simplify the expression. -2/5(10+15m-20n)

Prove the divisibility of the following numbers: 25^9 + 5^7 is divisible by 30.also, read as (25 to the power of 9) + (5 to the power of 7) is divisible by 30. blank x 30what is the blank? ( it should be expressed in exponent form)