abigailiamm14 abigailiamm14
  • 25-03-2021
  • Mathematics
contestada

7. A rectangular area is 5 yards longer
than it is wide, and it covers 126 square
yards. Find its dimensions.

Respuesta :

kyasou
kyasou kyasou
  • 25-03-2021

Answer:

Step-by-step explanation:

1.  x is the width and length is x+5.  

2. x(x+5) = 126

3. x^2 + 5x = 126

4. subtract 126 from each side to set to zero

5. x^2 + 5x - 126 = 0

6. factor

7. (x+14)(x-9)=0

8.  x can equal -14 or 9 but -14 doesn't make sense in this problem because a length can't be negative

9. so width is 9 and length is 14

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