Aminer descended 1500 feet into a mine. while in the mine, he then rose 1200 feet and then descended 850 feet. what was the miner's net gain or loss in altitude?

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

The weight of an object in a particular scale is 175.2 lbs. the measured weight may vary from the actual weight by at most 0.1 lbs. what is the range of actual weights of the object

Polygon abcd is a rectangle what is the area