1, 3, 5, 6, 7, and 8 PLEASE ANSWER THE QUESTION WITH A ANSWER NOT A BLANK I ALREADY HAVE 2 AND 4!!

What is the approximate total length of iron edging needed to create the square frame and the two diagonals?

Issof claims that the scale factor is 1/2. which statement about his claim is correct

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) = .