In the diagram a || b, if m∠6 = 21°, what is m∠4? a) 21° b) 10.5° c) 159° d) 339°

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241

The table shown below gives the approximate enrollment at the university of michigan every fifty years. how many more students were enrolled at the university of michigan in 1950 than in 1900?

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?