- Find all the critical numbers of the function? f(x)=xe^-7x?

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If a and b are positive integers such that gcd(a,b)=210, lcm[a,b]=210^3, and a** **The empirical formula of hydrazine is NH2, and its molecular mass is 32.0 grams. What is its molecular formula? To test the null hypothesis that the diet has no effect on weight, the p-value for a paired one-tail test is:? He's trying to take precaution on me? What is the first digit of Graham's Number?