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kodGreya [7K]
3 years ago
5

The Earth is approximately a sphere of diameter 12742 km. The surface area of a sphere is given by the formula A = 4π r2 Calcula

te the surface area of the Earth. Give your answer in metres squared and in standard form. Answer ………………………….
Mathematics
1 answer:
Butoxors [25]3 years ago
8 0

Answer:

Don't know....

follow me and mark me brainliest

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y represents the pages, while x represents the minutes. for every y, there is 9/10 x, therefore the equation is y=9/10x

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Add.<br> (4x-3) + (2x-4)
Ilya [14]
The answer would be:

6x - 7

I hope this helped you,

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3 0
3 years ago
A group of five people are all working on the same mathematics problem. On the night before it is due, they call each other to d
UkoKoshka [18]

Answer:

Minimum number of calls = 10

Step-by-step explanation:

Lets name the five people as A,B,C,D and E.

<u>On the night before ,each person talks to every other person atleast once that means A would talk to B,C,D and E atleast once.</u>

Lets start with A. He would talk to other 4 people which means there would be 4 phone calls made.

Now lets take B. He can talk to A,C,D and E. But  A has already talked to C therefore to get minimum number of phone calls , B need not call A again. So he calls only C,D and E.

In case of C using similar logic he need to talk to only D and E.

For D , he talks to E alone.

E does not have to talk to anyone as he has already talked to everyone atleast once.

Total calls = 4 + 3 + 2 + 1

                    = 10

5 0
3 years ago
If two lines in a linear system __________, they have exactly one point in common.
Alex17521 [72]

intersect.

because yes.

6 0
3 years ago
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What Number is X in this equation? <br><br> 9 - 3 ÷ 1/3 + 1 = X
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1

Step-by-step explanation:

Use PEMDAS to solve the equation, and you will get the answer 1 for x

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3 years ago
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