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faltersainse [42]
3 years ago
13

Please help

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
8 0

Step-by-step explanation:

  • Total number of albums = 10 albums\;
  • Number of pages in each album = 42 pages
  • Stamps fit on 1 page = 40 stamps

As total number of pages in each album is 42 pages, so

➝ Total number of pages in 10 albums = (42 × 10) pages

➝ Total number of pages in 10 albums = 420 pages

Now, as the number of stamps fit on 1 page is 40 stamps, so

➝ Stamps fit on 420 pages = (420 × 40) stamps

➝ Stamps fit on 420 pages = 16,800 stamps

<u>T</u><u>h</u><u>e</u><u>r</u><u>e</u><u>f</u><u>o</u><u>r</u><u>e</u><u>,</u><u> </u><u>1</u><u>6</u><u>,</u><u>8</u><u>0</u><u>0</u><u> </u><u>stamps are in the total collection</u><u>.</u>

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The wavelength of red light in a spectrum is about 0.0000007 meters. Which
Nana76 [90]

Answer:

0.0000007

And if we count the number of zeros before the number 7, we can rewrite the number like this:

7x10^{-7}

We cansolve this problem also counting the number of positions that we need to move the decimal point to the right in order to obtain the first number (7)

And the best option would be:

B. 7 x 10-7

Step-by-step explanation:

For this case we have the following number given:

0.0000007

And if we count the number of zeros before the number 7, we can rewrite the number like this:

7x10^{-7}

We cansolve this problem also counting the number of positions that we need to move the decimal point to the right in order to obtain the first number (7)

And the best option would be:

B. 7 x 10-7

8 0
3 years ago
What is a decimal in tenths that is less than 2.42 but greater than2.0
lukranit [14]
The decimal of 2.1 is greater than 2.0 but less than 2.42
7 0
3 years ago
Read 2 more answers
tracy rakes leaves to help her parents .she can rake 4 bags of leaves in 40 minutes .if she continues to rake leaves at this rat
Stels [109]
The question can be answered using ratio and proportion.
In 40 minutes, Tracy can rake 4 bags of leaves. In 2 hours (which is equivalent to 120 minutes), how many bag will it be?

Making the equation.
4 : 40 = BAGS : 120
4 x 120 = 40 x BAGS
480 = 40 (BAGS) // Divide both sides by 40
BAGS = 12.

So there will be 12 bags of leaves.


5 0
3 years ago
What is the ratio of 8 to 60 written as a fraction in lowest terms
Sedaia [141]

Answer:

2/15

Step-by-step explanation:

8/60

Divide the top and bottom by 4

8/4 =2

60/4 = 15

2/15

3 0
3 years ago
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According to a survey of 100 people regarding their movie attendance in the last year, 40 had seen a science fiction movie, 50 h
Anarel [89]

Answer:

Kindly check attached picture ; 37.5%

Step-by-step explanation:

Let:

S = number of science fiction movie viewers

H = number of horror movie viewers

A = number of adventure movie viewers

From the information given :

n(SnHnA) = 5

n(SnH) only = 15 - 5 = 10

n(SnA) only = 25 - 5 = 20

n(AnH) only = 5 - 5 = 0

n(S) only = 40 - (10+5+20) = 5

n(H) only = 40 - (10+5+0) = 25

n(A) only = 50 - (5 + 20 + 0) = 25

2.) % of science fiction movie to horror movie fans

Total Science fiction movie fans = n(S) = 40

Science fiction and Horror movie fans = n(SnH) = 15

[n(SnH) / n(S)] * 100%

(15 / 40) * 100%

0.375 * 100%

= 37.5%

4 0
3 years ago
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