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Drupady [299]
3 years ago
8

the perimeter of a gsrden is 14ft if the length is 1ft more than the width what is the width and length

Mathematics
1 answer:
zalisa [80]3 years ago
4 0

Answer:

Width = 3

Length = 4

Step-by-step explanation:

the perimeter = L+L+W+W

we know the perimeter to be 14 so 14 = L+L+W+W and it tells us the length is 1ft more the the width so the width will be x and the length will be x+1

14 = x+1+x+1+x+x

Combind like terms:

14 = 4x+2

-2 +14 = 4x+2 -2

12 = 4x

12/4 = (4x)/4

x = 3

Taking this peice of information we stick it back into our side lengths.

x and x+1

the width = x and length = x+1

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suppose the temperature outside is dropping 2.5 degrees each hour how much will the temperature change in 6 hours​
mote1985 [20]

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Step-by-step explanation:

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carly mowed 2 more lawns than Roco each week for 6 weeks. carly mowed a total of 18 lawns. how many did Rocco mow each week?
mylen [45]

Answer:

Rocco mowed 1 lawn a week.

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4 0
3 years ago
at maximum speed, an airplane travels 1720 miles against th wind in 5 hours. Flying with the wind, the plane can travel the same
iragen [17]

Answer:

x = 387

Step-by-step explanation:

The wind acts in the opposite direction to the plane when the time is longer.

The wind acts in the same direction as the plane when the time is shorter.

Equation

d = r*t

Givens

  • d = 1720
  • x = plane's speed
  • y = wind speed
  • t1 = 5 hours
  • t2 = 4 hours.

Substitution

  • d = (x + y) * t
  • 1720 = (x + y) * 4
  • 1720 = (x - y) * 5

Since the two distances are the same, you can equate the right hand sides.

  • (x + y) * 4 = (x - y)*5              Remove the brackets.
  • 4x + 4y = 5x - 5y                  Add 5y to both sides
  • 4x + 4y + 5y = 5x - 5y + 5y  Combine all the terms.
  • 4x + 9y = 5x                          Subtract 4x from both sides
  • 9y + 4x - 4x = 5x - 4x           Combine
  • 9y = x

Now use one of the given equations with the distance

  • 1720 = (x + y)*4           Substitute 9y for x
  • 1720 = (9y + y) *  4      Combine
  • 1720 = 10y * 4             Multiply the right
  • 1720 = 40y                  Divide by 40
  • 1720/40 = 40y/40      Do the division
  • 43 = y                          y = wind speek
  • 9y = x                          x = 9*y  
  • 9*43 = x
  • x = 387 miles per hour.
4 0
3 years ago
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