Which expressions are polynomials? select each correct answer. x – 1 5x²-√x 6+p 8x-z³

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Arectangle has a perimeter of 20 cm. the length, x cm, of one side of this rectangle is uniformly distributed between 1 cm and 7 cm. find the probability that the length of the longer side of the rectangle is more than 6 cm long.