You are installing a fence around this entire field. Fencing costs $29 per yard. How much will it cost to fence the entire field?
25 ft
60 ft
Lawn
50 ft
40 ft

Can someone check my answer? you : )

In the 30-60-90 triangle below side s has a length of and side r has a length

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) = .