Which of the following represents the additive identity? ab = ba a · 1 = a a + b = b + a a + 0 = a

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min