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Can you take 20 mg of prednisone for three days? Do you think humans will survive long enough to evolve into something different or will we make ourselves extinct before we have the chance? X^3+4x=4+x^2 simplify i got stuck? An athlete running 2.6 m/s increases his velocity to 3.7 m/s in 2.7 s. What is the acceleration of the runner? Keith hits a rough patch of ice. The coefficient of friction between the sleigh and the ice is 0.21. Find the
new acceleration of the sleigh?