About 55.2 billion pieces of unopened junk mail ends up in landfills each year. this is about 48% of all the junk mail that is sent annually. how many pieces of junk mail are sent annually?

Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.

See attachment below and find the equivalent of tan(∠qsr)

If value of cos330° is √3/2 then find tan165°.