What is this answer I don't understand how to figure it out

Mathematics

2 answers:

Diano4ka-milaya [45]3 years ago

8 0

These are congruent angles. So they would be equal to each other. 6x=4x+50

2x=50

x=25°
:)

pav-90 [236]3 years ago

4 0

(4x+50)=6x
50=2x/:2
x=25°

checking:

4*25 + 50 = 150° (above angle)
6*25 = 150° (under angle)

They are the same angles.

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Step-by-step explanation:

$\left\{\begin{array}{ccc}2x+1y+2z&=&13\\1x+1y-2z&=&8\\1x+2y+1z&=&11\\\end{array}\right.\\\\\\\Delta=\left| \begin{array}{ccc}2&1&2\\1&1&-2\\1&2&1\end{array}\right| =2*\left| \begin{array}{ccc}1&\frac{1}{2}&1\\1&1&-2\\1&2&1\end{array}\right| =2*\left| \begin{array}{ccc}1&\frac{1}{2}&1\\0&\frac{1}{2}&-3\\0&1&3\end{array}\right| =2*(\frac{3}{2}+3)=9\\\\$

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$\Delta_3=\left| \begin{array}{ccc}2&1&13\\1&1&8\\1&2&11\end{array}\right| \\\\\\=\left| \begin{array}{ccc}0&-1&-3\\0&-1&-3\\1&2&11\end{array}\right| \\\\\\=0\\$

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