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galina1969 [7]
2 years ago
8

Solve for x in the triangle round your answer to the nearest tenth Pls help ASAP!!

Mathematics
1 answer:
lbvjy [14]2 years ago
4 0

Answer:

x = 3.9

Step-by-step explanation:

cos = adj/hyp

cos67 = x/ 10

x = 10 * cos67

use calculator

x = 3.9

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Consider the operation is R_2\to -3R_2.

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\left[\left.\begin{matrix}1&0&1\\1&3&-1\\3&2&0\end{matrix}\right|\begin{matrix}-1\\-9\\-2\end{matrix}\right]

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Step-by-step explanation:

We have,

\left[\left.\begin{matrix}1&0&1\\1&3&-1\\3&2&0\end{matrix}\right|\begin{matrix}-1\\-9\\-2\end{matrix}\right]

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