In 2000 the city of las vegas had a population of 478,434. in 2007 there were 558,880 people living in las vegas. how many more people were living in las vegas in 2007 than in 2000? a. 8,446 b. 80,446 c. 82,446 d. 92,456

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

What is the measure of one interior angle of a pentagon

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )