Prove that if the sum of digits of a number is divisible by 3, then so is the number. (Hint: Write 225 as 2 · 102 + 2 · 10 + 5, and consider each part modulo 3. Generalize this for any positive integer.)

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A: Step 1: Step 2: Step 3: Step 4:

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A: This means that the horizontal asymptote of the rational function r(x)=g(x)f(x)​ is y=0. Remember…

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A: Part 2: Part 3:Conclusion Discussion of the ImageThe image below  illustrates the torus and the…

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Q: Solve and show all calculations   Exercise 2314

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A: Step 1: GivenE[(X−1)2]=10E[(X−2)2]=6 Step 2:Expand E[(X−1)2]=10E[X2+1−2X]=10E[X2]+E[1]−2E[X]=10The…

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