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g100num [7]
3 years ago
14

Find the value of that makes ADEFAXYZ.

Mathematics
1 answer:
vovikov84 [41]3 years ago
7 0

Answer:

x = 2/3

DF = 10

scale factor of ΔDEF to ΔXYX is 1:3

Step-by-step explanation:

DF corresponds to XZ and DE corresponds to XY so we can set up a proportion:

6x+6/30 = 8/24

simplify 8/24 to be 1/3

6x+6/30 = 1/3

cross-multiply:

3(6x+6) = 30

18x + 18 = 30

18x = 12

x = 12/18 or 2/3

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f(-4)=20

Option B is correct.

Step-by-step explanation:

We are given f(n)=n^2-2

We need to find f(-4)

Solving:

f(n)=n^2-n\\f(-4)=(-4)^2-(-4)\\f(-4)=16+4\\f(-4)=20

So, f(4)=20

Option B is correct.

Keyword: Using function to find f(x)

Learn more about Using function to find f(x) at:

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  • brainly.com/question/2645523
  • brainly.com/question/4231418

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For multiplying radical expressions, we are first to list down the given.
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Simplifying,
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Further simplification will lead us to the final answer of,
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