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nikklg [1K]
3 years ago
5

There are a total of 122 countries in Africa, Europe, and North America (as of 2003). Europe has twice as many countries as Nort

h America, and Africa has seven more than Europe. How many countries are in each of these three countries?
Mathematics
1 answer:
Eddi Din [679]3 years ago
8 0
A + E + N = 122
E = 2N
A = 7 + E....A = 7 + 2N

(7 + 2N) + 2N + N = 122
5N + 7 = 122
5N = 122 - 7
5N = 115
N = 115/5
N = 23 <== North America

E = 2N
E = 2(23)
E = 46 <== Europe

A = 7 + E
A = 7 + 46
A = 53 <=== Africa
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Step-by-step explanation:

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Hey there! I'm happy to help!

First, we need to rotate our points 180° about the origin. To find the coordinates after such a rotation, we simply find the negative version of each number in the ordered pair, which can be written as (x,y)⇒(-x,-y).

Let's convert this below

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A: (-1,-1)⇒(4,-2)

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Now you know how to find the coordinates of translated figures! Have a wonderful day! :D

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