Suppose a laboratory has 26g sample of polonium-210. The half life of polonium is about 138 days. how many half lives of polonium 210 occur in 276 days? How much polonium is is in the sample 276 days later?

Zeus Industries bought a computer for $2859. It is expected to depreciate at a rate of 21% per year. What will the value of the computer be in 3 years?

85% of 20 is what number

What is the greatest common factor of 27 and 72? 3 6 9 13

It is given that y varies directly as x. If y = 10 when x = 3 determine the constant of variation. A. - 3/10 B. 10 C. 5 D. 10/3

Water is being pumped to empty a swimming pool. At 6 a. m, the water level is 150 cm. Every 2 hours, the water level drops by 30 cm. what is the earliest time when the pool will be empt? A) 10 A. M. B) 11 A. M. C) 4 P. M. D) 5 P. M.

A large farm has 75 acres of wheat and 62.5 acres of corn. The farm crew can harvest the the wheat from 12 acres and the corn from 10 acres per day. In how many days will all of the fields be harvested?

Piece of rope that is 15 ft long what is the area

What's the temperature difference between - 5 degrees and 25 degrees? A. 20 degrees B. 25 degrees C. 30 degrees D. 35 degrees

He school has 800 students with 20 students on the gymnastic team and 10 students on the chess team (including 3 students who are on both teams). How many students in the school are not members of either the gymnastic team or the chess team?

What method can you use to find the product of 70*55