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raketka [301]
2 years ago
14

What is the area of the following circle?

Mathematics
2 answers:
algol [13]2 years ago
5 0

Answer:

1 π

Step-by-step explanation:

<em>A=</em> \pir^{2}

<em>A=</em> \pi· 1^{2}

<em>A=1</em>\pi

To get the answer right you need to copy and paste the pi symbol from google.

Marysya12 [62]2 years ago
3 0

Answer:

Area = pi X r^2 = pi x (1)^2 = 3.14 x 1 = 3.14

Step-by-step explanation:

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f(4)

Step-by-step explanation:

replace the x in f(x) with 4

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Two angles are complementary.The larger angle is 30 degrees more than 4 times the smaller
gregori [183]

Answer:

Step-by-step explanation:

Remark

2 angles are complementary means that 2 angles add up to 90°. That is the guiding princeple behind the problem.

Givens

Let the smallest angle = x

Let the largest angle = 4x + 30

Equation

4x + 30° + x = 90°                   Combine like terms on the left

Solution

5x + 30 = 90                            Subtract 30 from both sides.

5x + 30 - 30 = 90 - 30             Combine

5x = 60                                     Divide both sides by 5

5x/5 = 60/5

x = 12

Answer

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6 0
2 years ago
3. A website allows users to download individual songs or whole albums.
victus00 [196]

Answer:

Each song costs $2 and each album costs $10.

Step-by-step explanation:

Since a website allows users to download individual songs or whole albums, and all songs cost the same price to download and all albums cost the same price to download, and Karim pays $ 30 to download 5 songs and 2 albums while Kimberlyn pays $ 26 for download 3 songs and 2 albums, to determine what is the cost to download 1 song and the cost to download 1 album, the following calculations must be made:

5X + 2Y = 30

3X + 2Y = 26

(30 - 26) / (5 - 3) = X

4/2 = X

2 = X

Therefore, each song has a cost of $ 2.

Thus, to know the cost of each album (knowing that both downloaded the same amount, that is, 2), the following calculation must be performed:

5x2 + 2Y = 30

10 + 2Y = 30

2Y = 30 - 10

2Y = 20

Y = 20/2

Y = 10

Therefore, each album has a cost of $ 10.

5 0
2 years ago
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