13. The length of a rectangle is 9 cm more than 2 times the width. If the perimeter of the rectangle is 60 cm,
2 answers:
Answer:
- C. length = 23 cm; width = 7 cm
Step-by-step explanation:
<u>Let the width is x, then the length is:</u>
<u>Perimeter is:</u>
- P = 2(l + w)
- 60 = 2(x + 2x + 9)
- 30 = 3x + 9
- 3x = 21
- x = 7
<u>Dimensions are:</u>
- Width = 7 cm, length = 2*7 + 9 = 23 cm
Correct choice is C
Answer:
<h2>C. length = 23 cm; width = 7 cm</h2>
Step-by-step explanation:
Let the width is x, then the length is:
l = 2x + 9
Perimeter is:
P = 2(l + w)
60 = 2(x + 2x + 9)
30 = 3x + 9
3x = 21
x = 7
Dimensions are:
Width = 7 cm, length = 2*7 + 9 = 23 cm
Correct choice is C
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