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3 years ago

What is the total number of digits required in numbering the pages of a book which has 53 pages?

Mathematics

1 answer:

OlgaM077 [116]3 years ago

8 0

Answer:

The total number of digits required in numbering the pages of a book that has 53 pages would be: 97.

Step-by-step explanation:

This answer would be 97 due to the first nine digits being singular.

The next 44 digits are double, so therefore, you multiply 44 by 2, and you end up with 88.

After that, you take 88 and add the 9, which, is 97 digits in total that you would need to number a 53 page book.

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Questions:

A clothing manufacturer uses the model a = √(f + 4) - √(36 - f) to estimate the amount of fabric to order from a mill. In the formula, a is the number of apparel items (in hundreds) and f is the number of units of fabric needed. If 400 apparel items will be manufactured , how many units of fabric should be ordered?

Answer:

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Step-by-step explanation:

Given

$a = \sqrt{f + 4} - \sqrt{36 - f}$

Required

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$f^2 - 48f + 16f = 0$

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Factorize

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$f = 0$ or $f = 32$

f can not be 0 because some units must be ordered.

So, f = 32

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