3 years ago

Solve for a 7a - 20 = 52m

Mathematics

1 answer:

spin [16.1K]3 years ago

6 0

Answer:A=52M/7+20/7

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

In $\triangle BCD$

BD = CD .....(Given)

$\implies m\angle CBD = m\angle BCD$

(By isosceles triangle theorem)

$m\angle BCD = 60\degree....(given)$

$\implies m\angle CBD = 60\degree$

Now,

$m\angle CBD + m\angle ABD= 180\degree$

(Angles in linear pair)

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$\implies m\angle ABD= 180\degree - 60\degree$

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