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telo118 [61]
4 years ago
14

Robert buys last year's best-selling novel, in hardcover, for $21.00. This is with a 30% discount from the original price. What

was the original price of the novel?
Mathematics
1 answer:
MAXImum [283]4 years ago
6 0
Instead of first multiplying the # by 0.7;70% you will divide it by 0.7 , thus getting 30 $
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But was there a positional system in which π was known? As S. Rabinowitz has realized, there indeed was such a system albeit an unusual one. The starting point was the series



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representations are thought in the form utilized by Horner's method. E.g., in the decimal system we have

(1)√2= 1.41421 ... = 1 + 1/10 (4 + 1/10 (1 + 1/10 (4 + 1/10 (2 + 1/10 (1 + 1/10 ( ... )))))),π= 3.14159 ... = 3 + 1/10 (1 + 1/10 (4 + 1/10 (1 + 1/10 (5 + 1/10 (9 + 1/10 ( ... )))))),

But was there a positional system in which π was known? As S. Rabinowitz has realized, there indeed was such a system albeit an unusual one. The starting point was the series



which also can be written as



or, in the Horner form,



3 0
3 years ago
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