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jeka94
3 years ago
8

Help pls and no links

Mathematics
1 answer:
Nastasia [14]3 years ago
3 0

Answer:

C) 4/(x+y)²

Step-by-step explanation:

start by expanding so it is written as 2÷(x+y)/(x+y)÷2.

Then rearrange so that it is 2×2/(x+y)×(x+y) or 4/(x+y)²

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scoundrel [369]
Very interesting question, i’m happily here to answer it for you The answer you might be looking for is
decimal: 0.052
Fraction:13/250
Percentage: 5.2%

Have a blessed day God bless.
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3 years ago
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If D is the midpoint of the segment AC and C is the midpoint of segment DB , what is the length of the segment AB , if AC = 3 cm
adell [148]
Comment
The only way I can envision this is put all 4 points on 1 line segment. They go in the order of ADCB. I can only draw it this one way.

Given
D is the midpoint of AC
C is the midpoint of DB
AC = 3 cm

Argument
AC = 3 cm           Given
AD = DC                       D is the midpoint of AC
AD = 3/2                       Definition of a midpoint.
DC = 3/2                       Definition of a midpoint

DC = 3/2                       Last statement
DC + CB = 1.5 + 1.5.   C is the midpoint of BD
DB = 3                          Consolidation of equals
AD + DB = AB               
1.5 + 3 = 4.5                 Substitution.


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3 years ago
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If 0° ≤ θ ≤ 90° and cosθ = 11 15 , what is the value of sin (90° - θ)?
kolezko [41]
The same value as cosα

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Step-by-step explanation:

Given:

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After population = Current\ population(1+r)^n

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b. Population after 5 year

=8,851,000(1.02)^5\\\\=9,772,219.16

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