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sveticcg [70]
3 years ago
8

QUICK.....use the distributive property to find the equivalent expression to (5+7)4

Mathematics
1 answer:
lilavasa [31]3 years ago
8 0
4 x 5 = 20
4 x 7 = 28
20 + 28 = 48
48 is your answer
Hope this helps!
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The sum of the first 20 terms of the sequence a(n)=7n+2
Bad White [126]
A  =  7n + 2

a₁ = 7*1 + 2 = 9

a₂ = 7*2 + 2 = 16

a₃ = 7*3 + 2 = 23
.
.
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a₂₀ = 7*20 + 2 = 142

This is an Arithmetic progression, a = 9,   last term = 142

Sum of the 20 terms using:  n/2(a + l)      where l = last term.
 
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= 1510

Sum of the first 20 terms = 1510
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Answer:

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Again it is given that \frac{11}{250} fraction of the world's population lives in the United States of America.  

So, \frac{11x}{250} is the population of USA.

Therefore, the fraction of the population of North America that is the population of USA will be \frac{\frac{11x}{250} }{\frac{2x}{25} } =\frac{11}{20} (Answer)

7 0
3 years ago
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True [87]
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Good luck with your work! Brainliest would be appreciated :)

3 0
3 years ago
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lesya692 [45]

Answer:

Question 1= EFC and GFH

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I'm not sure but I think its right!

Pls let me know

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