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Marina CMI [18]
3 years ago
10

The surface of the Earth is called the:

Social Studies
1 answer:
Basile [38]3 years ago
6 0

Answer:

The answer is ✰ The Crust ✰

Explanation:

:))

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A rectangular page is designed to contain 81 square inches of print. The margins at the top and bottom of the page are each 1 in
Nookie1986 [14]

Answer:

x = 11.02 inch by  y = 7.35 inch

Explanation:

Let the width of the print be = x

Then the width of the page is x + (1.5+1.5) = x + 3

Let the height of the print be = y

Then the height of the page is y + (1+1) = y + 2

Given the area of the print is 81 square inches

That means, xy = 81

Therefore, y = \frac{81}{x}

Therefore, the area of the page is

A = (x + 3)(y + 2)

   = (x + 3)(\frac{81}{x} + 2)

Now for least amount of paper to be used,

\frac{dA}{dx}=(x+3)(\frac{81}{x}+2)

\frac{dA}{dx}= \left (\frac{81}{x}+2  \right )+\left ( x+3 \right )\left ( -\frac{81}{x^{2}} \right )=0

\frac{81+2x}{x}=\frac{(x+3)(81)}{x^{2}}

81x+2x^{2}=81x+81\times 3

2x^{2}=243

x = 11.02 inch

Now y = \frac{81}{x}

          = \frac{81}{11.02}

          = 7.35 inch

Therefore the dimensions of thr page for the least amount of paper is x = 11.02 inch by  y = 7.35 inch

8 0
3 years ago
R.
Lorico [155]

Answer:

b

Explanation:

amplify

4 0
3 years ago
Why did the tribal society feel that they need leadership ?​
klio [65]

Answer: Tribal leaders at the level work to build and develop triadic relationships by two people who do not know each other together based on shared values. In case a conflict arises, the leader of the tribe would encourage the parties involved to resolve the conflict by themselves.

please mark me as brainliest

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Choose the element of heritage that is preserved by each excerpt from the folktale.
Vaselesa [24]

Answer:

Choose the element of heritage that is preserved by each excerpt from the folktale.

"Here was a magnificent building in the heart of Lake Biwa."

✔ details about the setting

"His true name was Fujiwara Hidesato, and there is a very interesting story of how he came to change his name."

✔ details about historical characters

7 0
3 years ago
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What kind of materials did the ancient Greeks use in ordinary homes?
natima [27]
The ancient Greeks actually lived in houses made of dried mud bricks. Unfortunately, their walls are not very strong. It was common for houses to be broken into pieces, and most had to be renovated. The roofs of the houses are covered with mud panels and the windows are small and covered with wooden shutters.
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