Which expression is equivalent to 4/5 divided by 8

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.

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Which of these tools or constructions is used to inscribe a hexagon inside a circle?