Show that the vectors 3i – j + 7k and –6i + 3j + 3k are at right

angle to each other.​

Let f (x) = x e8x. find a formula for the nth derivative of f, where n is any positive integer. use x and n in your answer if needed. f (n)(x) =

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.