Question 352061
{{{D=(sum(10(0.9^n),n=0,infinity))}}}
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{{{D=10(sum((0.9^n),n=0,infinity))}}}
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{{{D=10(1+sum((0.9^n),n=1,infinity))}}}
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{{{D=10(1+0.9/(1-0.9))}}}
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{{{D=10(1+0.9/(0.1))}}}
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{{{D=10(1+9)}}}
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{{{D=10(10)}}}
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{{{highlight(D=100)}}}inches