What is the total number of digits required in numbering the pages of a book, which has 1,724 pages?

5,789 digits

Step-by-step explanation:

1 digit numbering from page 1-9

That is 9 pages×1 digit=9 digits

2 digit numbering from page 10 to 99

That is 90 pages × 2 digits=180 digits

3 digit numbering from page 100 to 999

That is 900 pages× 3 digits=2,700 digits

4 digits numbering from page 1000 to 1,724

That is 725 pages × 4 digits

=2,900 digits

Total digits=9 digits+ 180 digits+2,700 digits+2,900 digits

=5,789 digits

a

step-by-step explanation:

u take $30 minus $24. the answer/original($30)

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.