Mobile phone battery life phone battery life (hours) a 20 b 25 c 10 d 18 if 8.45% of the battery life of each mobile phone is used in a day by a typical user, for which mobile phone is 0.8 hour of battery life used in a day? phone a phone b phone c phone d

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.

Find dy/dx using implicit differentiation ln(20+e^xy)=y

Define multiplicative inverse. give an example of a number and its multiplicative inverse.