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Andreyy89
3 years ago
15

The pages in Nisha s book are numbered from 1.She found that total number of 501 digids are used to write all the page numbers.F

or example 2 digids for page number 23 and 3 digids for page number 101.How manny pages does the book have?
Mathematics
1 answer:
MAVERICK [17]3 years ago
7 0

There are 9 one-digit pages (1 - 9) → 9(1)

There are 90 two-digit pages (10 - 99) → 90(2)

There are "x" three-digit pages (100 - ???) → x(3)

9(1) + 90(2) + x(3) = 501

9 + 180 + 3x = 501

189 + 3x = 501

3x = 312

x = 104

Answer: 104 pages

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Kazeer [188]

Responder:

3 horas

Explicação passo a passo:

Dado :

Miguel a cada 45 minutos

Nádia a cada 60 minutos

Número de horas que eles vão se ver no mesmo lugar:

Para fazer isso ;

Obtenha o menor múltiplo comum de 60 e 45

Múltiplos de:

45: 45, 90, 135, 180, 225.

60: 60, 120, 180, 240, 300.

O menor múltiplo comum de 45 e 60 é 180

° Assim, eles se verão no mesmo lugar após 180 minutos;

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6 0
2 years ago
Eight less than one half a number is two
lawyer [7]

Is means =

less than is subtract


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3 years ago
For a pair of similar triangles, corresponding sides are always congruent.<br> True or false?
baherus [9]

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6 0
3 years ago
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John is buying food for his cat, Fluffy. Fluffy LOVES a fancy wet food which costs $1.50 per day. Fluffy will also tolerate dry
Vedmedyk [2.9K]

Answer:

The answer is below

Step-by-step explanation:

Let x represent the number of days that fluffy eats wet food in a week and y represents the number of days that fluffy eats dry food in a week.

Hence:

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Also, John wants to spend at most $9.00 on cat food each week. Hence:

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The list of possible points after solving graphically are:

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2 years ago
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