bob2637
bob2637 bob2637
  • 11-08-2020
  • Mathematics
contestada

Please help me on question 4 and 5 I am really stuck thank you I would really appreciate it

Please help me on question 4 and 5 I am really stuck thank you I would really appreciate it class=

Respuesta :

allenjmathew2121
allenjmathew2121 allenjmathew2121
  • 11-08-2020

Answer:

1. 5/4

2. 7

Step-by-step explanation:

1) Lets call the width as w

Therefore length would be:

w+4

To find the perimeter you use the formula:

2 (l+w)

Now substitute our values into this formula:

2 (w+4+w)

2( 2w+4)

4w+8

Now make this equal to 13:

4w +8 = 13

4w = 5

w = 5/4

2. In this question we will call length l

Therefore width would be:

l-5

Now we will do the steps we did above:

2 (l+l-5)

2 (2l-5)

4l -10

4l - 10 = 18

4l = 28

l = 7

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