Question

Can someone pls help me & at least show a little work . Thank you * * +:)...&/$++

Answer 1

Information given

The perimeter of a triangle is 49 ft

And let's the 3 sides of the triangle A, B and C. From the info given we know:

$A+B+C=\text{ 49 }$

And we also know some conditions given by: (Side B is 3 ft shorter than A)

$B=\text{ A-3 }$

Side C is twice the lenght of A:

$C=\text{ 2A}$

Now we can replace in the first equation the conditions and we have:

$A\text{ + (A}-3\text{) +2A = 49}$

Now we can do some algebra:

$A\text{ +A +2A }-3\text{ = 49}$$4A=\text{ 52 }\leftrightarrow\text{ A= }\frac{52}{4}=13$$B=\text{ A}-3=\text{ 13}-3=\text{ 10, C = 2A =2}\cdot13=26\text{ }$

The only possibility that makes sense from the options given is:

13