The density of iron is 7.8 g/cm^3 an iron beam has a volume of 10,504 cm^3 what is the mass of the iron beam? enter your answer as a decimal in the box.

⬜️ g

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) = .

Which of the following can be used to explain a statement in a geometric proof?

Need showing work for this problem 56.25 ×25.80