Respuesta :
Answer:
Step-by-step explanation:
P = 2(L + W)
P = 34
L = W + 5
34 = 2(W + 5 + W)
34 = 2(2W + 5)
34 = 4W + 10
34 - 10 = 4W
24 = 4W
24/4 = W
6 = W <=== 6 meters wide
L = W + 5
L = 6 + 5
L = 11 <=== 11 meters long
Step-by-step explanation:
- The length and width is unknown. What we do know is that the length is 5m longer than the width.
- Knowing this we can make the w = x, and the l = x + 5. This is, again, because the width is unknown and the length is the width + 5.
- Perimeter is 2(l + w) (p = 2(l + w)).
- We know the perimeter is equal to 34. Our equation would be 34 = 2(l + w).
- Substituting the length and width for the new variables we created: 34 = 2(x + (x + 5)).
- Simplified a bit this would be 34 = 2(x + x + 5) or 34 = 2(2x + 5)
- Now solve for x.
- x will be equal to your width and x + 5 will be equal to your l