AnicaM563883 AnicaM563883

28-10-2022
Mathematics

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Find the value of the variable. 90 (k+ 10) 3K A. 3 8/4 B. 25 C. 20 D. 40

Find the value of the variable 90 k 10 3K A 3 84 B 25 C 20 D 40 class=

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DeondraT706461 DeondraT706461

28-10-2022

The sum of the three angles in the picture must be 180°, so:

[tex]\begin{gathered} 90+(k+10)+3k=180 \\ 4k+100=180 \\ 4k=180-100 \\ k=\frac{80}{4}=20 \end{gathered}[/tex]

The variable k is 20.

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