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SpyIntel [72]
3 years ago
14

the length of a rectangular pool is three times its width. The perimeter of the rectangular pool is 168 feet. find the length an

d width of the pool.

Mathematics
2 answers:
lorasvet [3.4K]3 years ago
8 0
  • Answer:

<em>w = 21 feet</em>

<em>l = 63 feet</em>

  • Step-by-step explanation:

<em>l = 3w</em>

<em>P = 2(l + w)</em>

<em>168 = 2(l + w) : 2</em>

<em>84 = l  + w</em>

<em>replace l</em>

<em>84 = 3w + w</em>

<em>4w = 84</em>

<em>w = 84 : 4</em>

<em>w = 21 feet</em>

<em>l = 3w</em>

<em>l = 3×21 feet</em>

<em>l = 63 feet</em>

igor_vitrenko [27]3 years ago
7 0

Step-by-step explanation:

breadth = 21 m

length = 63 m

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Step-by-step explanation:


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Mark's football team has scored about 24 points each game. They played 12 games this season.
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Answer:

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Step-by-step explanation:

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4 0
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Help with a &amp; b please ! :)
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Plz help asap and plz show me how to do this..thxs I really need help with this
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3 0
3 years ago
Tony and Cleo are donating some of their books to a hospital. If Tony contributes half of his books and Cleo gives one third of
liraira [26]
Short Answer: Tony 40 Cleo 30
Givens

T = Tony
C = Cleo

Equations
1/2 T + 1/3 C = 30      (1)
2/5 T + 1/2 C = 31       (2)

Adjustments
Multiply  (1) by 3
Multiply (2) by 2

New Equations
3/2 T + C = 90      (1a)
<u>4/5 T + C = 62</u>      (2a) Subtract (2a) from (1a)
(3/2 - 4/5)T = 28                      the common multiple of 2 and 5 = 10. 
(15/10 - 8/10)T = 28
7/10 T = 28                              Multiply by 10
7T = 28*10
7T = 280  Divide by 7
T = 280/7 = 40

Put T = 40 into (1)
1/2 T + 1/3 C = 30
1/2 (40) + 1/3 C = 30
20 + 1/3 C = 30                      Subtract 20 from both sides.
1/3 C = 30 - 20
1/3 C = 10                              Multiply through by 3
C = 10 * 3
C = 30

Answer:
Cleo has 30 books.
Tony has 40 books.

Check
<em>Use Equation 2</em>
2/5 T + 1/2 C = 31
2/5*40 + 1/2 * 30 = ? 31
16 + 15 =?3`
31 = 31 They are equal.

4 0
3 years ago
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