ABC is an equilateral triangle and ACD is an Isosceles triangle. How do I find the measure of angle ADC

If 20% of a number is 35, what is 50% of that number?

Using the side-splitter theorem, daniel wrote a proportion for the segment formed by luke segment de. what is ec?

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.