If the circular top has a diameter of 14 inches, and the central angle is 36º, how many inches of stripping, rounded to the nearest tenth, does Ian need to cover the arc of this pie wedge-shaped opening?

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

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.