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Klio2033 [76]
3 years ago
10

Kai cuts out all the page numbers of a b\ook. He takes each number and cuts the numbers into separate digits (single digit numbe

rs are already separate). Given that the book has 999 pages numbered 1 through 999, how many separate digits does Kai have when he is finished
Mathematics
1 answer:
Eduardwww [97]3 years ago
5 0

Answer:

2,889 digits

Step-by-step explanation:

Total pages of the book = 999 pages

Page 1 - 9 cut separately = 9 digits

Page 10 - 99 = 90 pages

Total digits = 2(90)

= 180 digits cut separately

Page 100 - 999 = 900 pages

Total digits = 3(900)

= 2,700 digits cut separately

how many separate digits does Kai have when he is finished

Total separate digits Kai have when he is finished = 9 digits + 180 digits + 2700 digits

= 2,889 digits

Total separate digits Kai have when he is finished = 2,889 digits

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xxTIMURxx [149]

Answer:

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Step-by-step explanation:

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3 years ago
computing definite integral by appealing to geometric formulas Graph the following definite integral then find the exact area of
sergiy2304 [10]

First integral

Since f(x)=3x+1 is a linear function, its graph is a line. This means that you can decompose the area under its graph as the sum of a right triangle and a rectangle, as shown in the attached image.

All the dimensions are fairly easy to deduce: we have

AC = 2,\ CB=6

So, the area of the triangle is

A_t = \dfrac{2\times 6}{2}=6

For the rectangle, we have

A_r = AC\times CE = 2\times 4=8

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Second integral

We have

y = \sqrt{1-x^2} \implies y^2=1-x^2 \implies x^2+y^2=1

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Since the area of the unit circle is \pi, the value of the integral is \frac{\pi}{2}

Third integral

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4 0
3 years ago
Riya is applying mulch to her garden. she applies it at a rate of 250 , 000 cm 3 250,000 cm 3 250, comma, 000, start text, space
Tatiana [17]

The rate in

\frac{ {m}^{3} }{ {m}^{2} }  \: is \:0.25\frac{ {m}^{3} }{ {m}^{2} }

<h3>How to find rate is riya applying mulch in m^3/m^2 ?</h3>

given that riya applies it at a rate of 250,000 cm^3 of mulch for every m^2 of garden space.

we already know that 1m = 100cm.

so, each side of this cube is 100cm in length.

so,100 \times 100 \times 100 \: {cm}^{3}  \: in \:  {m}^{3}

To find what is the volume in cubic metres.

\frac{250000}{10000000}  =  \frac{1}{4}  = 0.25 \frac{ {m}^{3} }{ { m}^{2} }

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Learn more about problems on garden, refer :

https://brainly.in/question/50618467

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Disclaimer : This question was given incomplete on portal.Here is complete question.

Question : Riya is applying mulch to her garden.She applies it at a rate of 250,000 cm^3 of mulch for every m^2 of garden space. At what rate is riya applying mulch in m^3/m^2

8 0
2 years ago
Hello anyone to help ​
Murljashka [212]

Answer: You bought 7 books and you also bought 4 magazines

Explanation:

x = # of books purchased

y = # of magazines purchased

System of equations:

8x + 5y = 76
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Let’s use elimination in this case, but substitution can also work.

8x + 5y = 76
Multiply the (x + y = 11) by -8

We get:

8x + 5y = 76
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The xs cancel.
Add like terms.
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Divide by -3 on both sides
y = 4

Now plug in 4 into the (x + y = 11) equation to get x.

x + (4) = 11
Subtract 4 on both sides
x = 7
4 0
3 years ago
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Phoenix [80]

Answer: Hi!

121 ÷ 3 = 40.3

987 ÷ 9 = 109.7

675 ÷ 5 = 135

432 ÷ 7 = 61.7

Hope this helps you!

5 0
3 years ago
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