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Leya [2.2K]
2 years ago
12

Need a little help with one please

Mathematics
1 answer:
Pani-rosa [81]2 years ago
4 0

Answer:

That would be the side-side-side (SSS) postulate, which states that if all the sides of a triangle are in a fixed ratio to all the corresponding sides of another triangle, then the two triangles are said to be congruent.

Step-by-step explanation:

Looking at triangles ABC and DEF, we notice that:

\frac{AB}{DE} = \frac{AC}{DF}=\frac{BC}{EF}

since

\frac{3}{18} = \frac{6}{36}=\frac{7}{42}=\frac{1}{6}

Let me know if you have further questions.

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Answer:

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Step-by-step explanation:

3d^2 + 18d -21 =(3d -3)( d + 7)

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