likuhboss1234
likuhboss1234 likuhboss1234
  • 21-03-2018
  • Mathematics
contestada

how do you do this please help me

how do you do this please help me class=

Respuesta :

jndawg04 jndawg04
  • 21-03-2018
Perimeter is the sum of the sides.
4x + 6 +3x + 2 = 57
7x + 8 = 57
7x = 49
x = 7
Answer Link
frika
frika frika
  • 21-09-2018

The perimeter of a triangle is the sum of all sides' lengths.

Thus,

[tex]P=6+4x+(3x+2)=7x+8.[/tex]

Given [tex]P=57\ cm,[/tex] you get

[tex]7x+8=57,\\ \\7x=57-8,\\ \\7x=49,\\ \\x=\dfrac{49}{7},\\ \\x=7\ cm.[/tex]

Answer: x=7 cm.

Answer Link

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