3 years ago

Please I need help!!

Mathematics

1 answer:

Gelneren [198K]3 years ago

3 0

1 plus to the negative Peter plus the relative integers

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Basile [38]

Answer:

Step-by-step explanation:

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a + 30 = 3n

n = (a+30)/3

n(a) = (a+30)/3

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2 years ago

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3 years ago

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In triangle $ABC,$ point $D$ is on $\overline{AC}$ such that $AD = 3CD = 12$. If $\angle ABC = \angle BDA = 90^\circ$, then what

Neporo4naja [7]

Answer:

$BD=4\sqrt{3}\ units$

Step-by-step explanation:

we know that

$AD=12\ units$

$3CD=12$ ----> $CD=4\ units$

see the attached figure to better understand the problem

Triangles ABD and BCD are similar by AA Similarity Theorem

Remember that

If two figures are similar, then the ratio of its corresponding sides is proportional

$\frac{BD}{AD}=\frac{CD}{BD}$

substitute the given values

$\frac{BD}{12}=\frac{4}{BD}$

$BD^2=48$

$BD=\sqrt{48}\ units$

simplify

$BD=4\sqrt{3}\ units$

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3 years ago