Mathematics: Find the value of x when y = 6 and z = -1/2, if

Find the value of x when y = 6 and z = -1/2, - id6124417293, Aestheticblue

Lenaaa2019

14.01.2022

$x=-\frac{261}{46}$

Step-by-step explanation:

we have the expression

$\frac{3x+2y-5z}{y-4z}=\frac{x}{3y}$

we have

$y=6,z=-\frac{1}{2}$

To find the value of x, substitute the given values of y and z in the expression

$\frac{3x+2(6)-5(-\frac{1}{2})}{6-4(-\frac{1}{2})}=\frac{x}{3(6)}$

solve for x

$\frac{3x+12+\frac{5}{2}}{6+2}=\frac{x}{18}$

$\frac{3x+12+\frac{5}{2}}{8}=\frac{x}{18}$

Multiplying in cross

$(3x+12+\frac{5}{2})18=8x$

54x+216+45=8x

54x-8x=-216-45

46x=-261

$x=-\frac{261}{46}$

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jamaiciaw6

30.03.2023

From these given details result f(x)=2(x+3)(x-5) so

f(x)= 2(x^2 -5x +3x -15)

f(x)= 2(x^2 -2x -15)

f(X)= 2x^2 -4x -30 so the 3rd choice is right sure

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