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Tju [1.3M]
3 years ago
10

For circle O, mCD=125° and m

Mathematics
1 answer:
Burka [1]3 years ago
3 0

CA is a diameter of the circle, so m\widehat{AC}=180^\circ, which means m\angle AOB=m\angle AOD=m\widehat{AD}=180^\circ-m\widehat{CD}=55^\circ. Then m\boxed{\angle ABO}=90^\circ-55^\circ=35^\circ.

This means m\angle CBO=55^\circ-35^\circ=20^\circ. Also, if m\angle AOB=55^\circ, then m\angle BOC=180^\circ-55^\circ=125^\circ, which in turns tells us that m\boxed{\angle BCO}=180^\circ-20^\circ-125^\circ=35^\circ.

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Answer:

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Step-by-step explanation:

2

x

+

3

=

9

We want to find the variable  

x

, so we have to make it alone. To do so, first subtract  

3

from both sides of the equation:

2

x

+

3

 

−

 

3

=

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−

 

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=

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Now divide both sides by  

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2

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=

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2

So the final answer is:

x

=

3

Hope this helps!

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3 years ago
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