SadnessSwiftieid
Answered

the perimeter of a football field is 1040 meters. the length of the field is 120 meters less than 3 times the width. what are the dimensions of the field

Sagot :

P= 2W + 2L = 1040
let x=width
3x-120=length

2(3x-120)+2x=1040
6x-240+2x=1040
8x-240=1040
8x-240+240=1040+240
8x=1280
8x÷8=1280÷8
x=160 - width
3(160)-120=360 - length