SOLUTION: [ If I am given equations for both the width and length of a rectangle for example the width is 3x+1 and the length is x+2 and the perimeter of the shape is given, how do I work ou

Algebra ->  Test -> SOLUTION: [ If I am given equations for both the width and length of a rectangle for example the width is 3x+1 and the length is x+2 and the perimeter of the shape is given, how do I work ou      Log On


   

Question 817871: [ If I am given equations for both the width and length of a rectangle for example the width is 3x+1 and the length is x+2 and the perimeter of the shape is given, how do I work out what the value of x is? ]
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
w = 3x + 1
L = x + 2
---
p = 2L + 2w
---
p = 2(x + 2) + 2(3x + 1)
p = 2x + 4 + 6x + 2
p = 8x + 6
8x = p - 6
---
Answer:
x = (p - 6)/8
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Convert fractions, decimals, and percents:
https://sooeet.com/math/fraction-decimal-percent.php
---
Calculate and graph the linear regression of any data set:
https://sooeet.com/math/linear-regression.php