And object Weighs a quarter of a kilogram . I add one half of a kilogram to the object. I take 200g off. I double the mass of the object. I add one tone the object and then half it what is the mass of object

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

What are “like terms”? why can we only add like terms?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).