Respuesta :

Allyssa22
The width is 5. The formula is 2l+2w. If the length is 4 the width must be 5
2(4) + 2(5)= 18
8+10=18
18=18
ntowry

Answer:5

Step-by-step explanation:

2 x length + 2 x width = perimeter of rectangle.

you know the total is 18

(2 x 4) x 2w = 18

8 x 2w = 18

2w = 10

w = 5

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