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In ACDE, mZC = (4x – 16), m D = (6x - 1)", and mZE = (4x - 13). Find mZC.

In ACDE MZC 4x 16 M D 6x 1 And MZE 4x 13 Find MZC class=

Sagot :

Explanation:

We can do a diagram of triangle CDE:

The sum of the measures of the interior angles of any triangle is 180º. We can write an equation:

[tex]\begin{gathered} m\angle C+m\angle D+m\angle E=180º \\ (4x-16)+(6x-1)+(4x-13)=180 \\ (4x+6x+4x)+(-16-1-13)=180 \\ 14x-30=180 \end{gathered}[/tex]

Solve for x:

[tex]\begin{gathered} 14x=180+30 \\ 14x=210 \\ x=\frac{210}{14} \\ x=15 \end{gathered}[/tex]

And with x = 15, replace into the expression for the measure of angle C to find it:

[tex]m\angle C=4x-16=4\cdot15-16=60-16=44º[/tex]

Answer:

m

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