Using the midsegments of the triangle in the image below, what is the perimeter of АВС?
Give your answer as just a number.
Please help I’m desperate. I just don’t get it.

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.