Given that 2 x-y-z-240 - If z-2 y- y-2 x- then x-A- 50B- 70C- 60D- 0

The correct option is C 60 z = 27 y = 2x ⇒ nbsp;z = 2 (2x) = 4x 2x – y + z = 240 2x – 2x + 4x = 240 4x = 240 x = 60. ...

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Joint Variation

Given that 2 ...

Question

Given that 2x – y + z = 240. If z = 2y, y = 2x, then x = ?

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Δ

∣ ∣ ∣ ∣ \begin{matrix} x & 2 y - z & - z y & 2 x - z & - z y & 2 y - z & 2 x - 2 y - z \end{matrix} ∣ ∣ ∣ ∣

Δ_{1} = ∣ ∣ ∣ ∣ \begin{matrix} x - y - z & 2 x & 2 x 2 y & y - z - x & 2 y 2 z & 2 z & z - x - y \end{matrix} ∣ ∣ ∣ ∣

Δ_{2} = ∣ ∣ ∣ ∣ \begin{matrix} x + y + 2 z & x & y z & y + z + 2 x & y z & x & z + x + 2 y \end{matrix} ∣ ∣ ∣ ∣

\frac{x}{2 y + z - x} = \frac{y}{2 z + x - y} = \frac{z}{2 x + y - z}

x + y + z \neq 0

\frac{2 x - 3 y}{3 z + y} = \frac{z - y}{z - x} = \frac{x + 3 z}{2 y - 3 x}

= \frac{x}{y}

\frac{log a}{x + y - 2 z} = \frac{log b}{y + z - 2 x} = \frac{log c}{z + x - 2 y}

a b c^{4 z - 2 x - 2 y} = 1

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