А map of a square auditorium shows the actual room has an area of 3600 feet?. The scale drawing has an
area of 9 feet? What is the scale of the drawing?
А
1 in = 400 feet
B
1 in = 20 feet
3 in = 400 feet
D
3 in = 20 feet

41/2 - 1 1/3 what is the answer as a fraction?

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school