Questions by Elseine

Questions by Elseine

You are a police officer trying to crack a case. You want to check whether an important file is in the evidence room. Files have IDs that are positive integers and the evidence room contains n files in

asked Feb 26, 2021

2 answers

2 votes

92.7k views

After 90% reduction, you purchase a new soft drink machine on sale for $72. What was the original price of the soft drink machine?

asked Dec 28, 2020

1 answer

2 votes

24.5k views

The air in this room consists of countless tiny, independent molecules. You can be sure that these air molecules won't all shift spontaneously to the other side of the room (leaving you in a vacuum) because

asked Dec 21, 2020

1 answer

3 votes

143k views

a class of 30 students, 2 students did not borrow any books from the library, 12 students each borrowed 1 book, 10 students each borrowed 2 books, and the rest of the students each borrowed at least 3

asked Apr 14, 2020

1 answer

2 votes

196k views

A racquetball strikes a wall with a speed of 30 m/s and rebounds with a speed of The collision takes What is the average acceleration of the ball during the collision? 200 m/s2 zero 2800 m/s2 1300 m/s2

asked Mar 11, 2020

1 answer

0 votes

223k views

A mixture of c2h2 and ch4 has a total mass of 230.9 g. when this mixture reacts completely with excess oxygen, the co2 and h2o products have a combined mass of 972.7 g. what mass of ch4 was present in

asked Jun 28, 2019

1 answer

4 votes

77.6k views

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