Find the area of the shaded sector. leave your answer in terms of r=8 inside angle of the shaded sector is 90 degrees

Our goal is to collect email addresses from 60% of customers who purchase a product." so that means if i talk to 95 customers, i need to persuade to provide an email address?

Which is the completely factored from of xy^3-x^3y

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