- How many animals in zoos are extinct in the wild?

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Find the equation of the line tangent to the curve y= (x^2+3)^(1/2) that is perpendicular to the line 2x - y +7 = 0.? Can anyone tell me what the dimensions are of the TI Nspire CX graphing calculator are? I plan on 3d printing a case - can somebody help? Implicit Differentiation 14xy+cos(3y)=3x What is y'=? What creates the illusion of roundness or three dimensionality through the use of light and shadow on a two-dimensional surface? What constellation is the Milky Way in?