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Nookie1986 [14]
3 years ago
14

?????????????????????

Mathematics
2 answers:
d1i1m1o1n [39]3 years ago
7 0

Answer:

Y= 10

angle D= 76

angle C=40

angle E=64

Step-by-step explanation:

andrey2020 [161]3 years ago
6 0

Answer:

Hey There!

Given:

<em><u>Angle </u></em><em><u>CDE </u></em><em><u>=</u></em><em><u> </u></em><em><u>7</u></em><em><u>y</u></em><em><u>°</u></em><em><u>+</u></em><em><u>6</u></em><em><u>°</u></em>

<em><u>Angle</u></em><em><u> </u></em><em><u>DCE </u></em><em><u>=</u></em><em><u> </u></em><em><u>4</u></em><em><u>y</u></em><em><u>°</u></em>

<em><u>Angle</u></em><em><u> </u></em><em><u>DEF </u></em><em><u>=</u></em><em><u> </u></em><em><u>1</u></em><em><u>1</u></em><em><u>6</u></em><em><u>°</u></em>

To find :

<em><u>Angle</u></em><em><u> </u></em><em><u>DCE</u></em>

Step-by-step explanation:

For this,

we should know the property of exterior Angle

=> <em><u>An </u></em><em><u>exterior</u></em><em><u> Angle</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>Sum </u></em><em><u>of </u></em><em><u>two </u></em><em><u>opposite</u></em><em><u> </u></em><em><u>interior</u></em><em><u> angles</u></em>

<em><u>.</u></em><em><u>°</u></em><em><u>.</u></em>

<em><u>Angle </u></em><em><u>CDE </u></em><em><u>+</u></em><em><u> </u></em><em><u>Angle </u></em><em><u>DCE </u></em><em><u>=</u></em><em><u>Angle </u></em><em><u>DEF</u></em>

<em><u>(</u></em><em><u>inserting</u></em><em><u> </u></em><em><u>the </u></em><em><u>values</u></em><em><u>)</u></em>

<em><u>=</u></em><em><u>></u></em>

<em><u>7</u></em><em><u>y</u></em><em><u>°</u></em><em><u>+</u></em><em><u>6</u></em><em><u>+</u></em><em><u>4</u></em><em><u>y</u></em><em><u>°</u></em><em><u> </u></em><em><u>=</u></em><em><u>1</u></em><em><u>1</u></em><em><u>6</u></em><em><u>°</u></em>

<em><u>1</u></em><em><u>1</u></em><em><u>y</u></em><em><u>°</u></em><em><u>+</u></em><em><u>6</u></em><em><u> </u></em><em><u>=</u></em><em><u>1</u></em><em><u>1</u></em><em><u>6</u></em><em><u>°</u></em>

<em><u>1</u></em><em><u>1</u></em><em><u>y</u></em><em><u>°</u></em><em><u> </u></em><em><u>=</u></em><em><u>1</u></em><em><u>1</u></em><em><u>6</u></em><em><u>°</u></em><em><u>-</u></em><em><u>6</u></em><em><u>°</u></em>

<em><u>1</u></em><em><u>1</u></em><em><u>y</u></em><em><u>°</u></em><em><u> </u></em><em><u>=</u></em><em><u>1</u></em><em><u>1</u></em><em><u>0</u></em><em><u>°</u></em>

<em><u>y </u></em><em><u>=</u></em><em><u>1</u></em><em><u>1</u></em><em><u>0</u></em><em><u>°</u></em><em><u>/</u></em><em><u>1</u></em><em><u>1</u></em><em><u>°</u></em>

<em><u>y </u></em><em><u>=</u></em><em><u>1</u></em><em><u>0</u></em><em><u>°</u></em>

<h2><em><u>Hence,</u></em></h2><h2><em><u>Angle</u></em><em><u> </u></em><em><u>CDE </u></em><em><u>=</u></em><em><u>7</u></em><em><u>*</u></em><em><u>1</u></em><em><u>0</u></em><em><u>+</u></em><em><u>6</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>7</u></em><em><u>0</u></em><em><u>°</u></em><em><u>+</u></em><em><u>6</u></em><em><u>°</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>7</u></em><em><u>6</u></em><em><u>°</u></em></h2><h2><em><u>Angle</u></em><em><u> </u></em><em><u>DCE </u></em><em><u>=</u></em><em><u> </u></em><em><u>4</u></em><em><u>y</u></em><em><u>°</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u> </u></em><em><u>4</u></em><em><u>*</u></em><em><u>1</u></em><em><u>0</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>4</u></em><em><u>0</u></em><em><u>°</u></em></h2>
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