Functions and equations

[kris.yarmak123]

The perimeter of the isosceles triangle shown in the diagram on the right could be written (7x+m)/(x(x+2)). The value of m must be ..... units
Plz help

 

[MarkFL]

What must the side not labeled be, since we are told this is an isosceles triangle?

 

[kris.yarmak123]

What must the side not labeled be, since we are told this is an isosceles triangle?

Well it’s supposed to be 3/x as well

 

[kris.yarmak123]

What must the side not labeled be, since we are told this is an isosceles triangle?

Ohhh I started getting it. Thanks! I just have problems with this one because of my English

 

[kris.yarmak123]

What must the side not labeled be, since we are told this is an isosceles triangle?

Thank you very much! I got it. The value of m is 12

 

[MarkFL]

Yes, the perimeter \(P\) is then:

[MATH]P=\frac{1}{x+2}+2\cdot\frac{3}{x}=\frac{x+6(x+2)}{x(x+2)}=\frac{7x+12}{x(x+2)}[/MATH]
And so I agree that \(m=12\).

 

[kris.yarmak123]

Yes, the perimeter \(P\) is then:

[MATH]P=\frac{1}{x+2}+2\cdot\frac{3}{x}=\frac{x+6(x+2)}{x(x+2)}=\frac{7x+12}{x(x+2)}[/MATH]
And so I agree that \(m=12\).

Thank you very much!