HELP PLS I WILL MARK BRAINLIST IF CORRECT !! -
1. 9 6/8 = n + 2 1/8

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2. x — 2/9 = 6 5/9
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3. y + 1/4 = 6 11/12
pls help me i dont understand any of this.

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) = .

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

Atriangle has verticals at b(-3,0), c(2,-1), d(-1,2). which transformation would produce an image with verticals b”(-2,1), c”(3,2), d”(0,-1)?