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tia_tia [17]
3 years ago
12

A rectangle is 3 times as long as it is wide, and its perimeter is 80 centimeters. Find its dimensions

Mathematics
1 answer:
Free_Kalibri [48]3 years ago
8 0

Say the width is W and the length is L

L=3W (and of course W=W)

Now you use the perimeter formula P=2L+2W

80=2(3W) + 2W)

80=6W+2W

80=8W Divide both sides by 8

W=10

Now that you know the width, substitute it back into L=3W to find the length

L=3(10)

L=30

The dimensions are length: 30 cm and width: 10 cm

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Separate the x- and y-values with a comma.<br> X=-3+y<br> 26x - 5y = 6
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Answer:

The solution of the given system is (x,y) = (1,4)

Step-by-step explanation:

Here, the given system of equation is:

x  = -3 + y

26 x - 5 y =  6

Now, substitute x  = -3 + y in the second equation , we get

26 x - 5 y =  6  ⇒   26 (-3 + y) - 5 y =  6

or, 26(-3)  + 26(y)  - 5y = 6

⇒ - 78 + 26 y - 5y = 6

⇒   21 y =  84

⇒  y = 84 / 21 = 4   or ,   y =  4

So x  = -3 + y  =  -3 + 4 = 1

Hence, the solution of the given system is (x,y) = (1,4)

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3 years ago
Assume that you are going to open a checking account. You are examining different banks and banking accounts, to choose a
Alexxandr [17]
Explain how the reactions of “the bloodless ghouls” to Orpheus’s song in paragraph 3 are important to the overall theme of the story. Cite evidence from the story in your response.
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2 years ago
A pear weighs 6 ounces. Do 11 pears weigh more than 5 pounds? yes or no
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One pear weighs 6 oz, you have 11 pears you multiply 11 by 6 getting 66 oz divided by 16 equals 4.25 lbs. Because there are 16 oz in 1 pound.

answer: No
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Which situation is best described by this number line?
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Answer: B. Ryder had $6.25. He needs to buy school supplies and ends up owing his mother $2.50

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2 years ago
the largest of these five squares has side length 27 units, and each additional square's side length is 2/3 as large as the one
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The total area is 1289.41 units².

The total perimeter is 281.32 units.

<h3>What is the total area and perimeter?</h3>

The first step is to determine the side lengths of the other squares:

  • Length of the second square = 2/3 x 27 = 18
  • Length of the third square = 2/3 x18 = 12
  • Length of the fourth square = 2/3 x 12 = 8
  • Length of the fifth square = 2/3 x 8 = 5.33

Area of a square = length²

Perimeter of a square = 4 x length

  • Area of the first square = 27² = 729
  • Area of the second square = 18² = 324
  • Area of the first square = 12² = 144
  • Area of the first square = 8² = 64
  • Area of the first square = 5.33² = 28.41

Total area = sum of the areas of the 5 squares = 1289.41 units²

  • Perimeter of the first square = 4 x 27 = 108 units
  • Perimeter of the second square = 4 x 18 = 72
  • Perimeter of the third square = 4 x 12 = 48
  • Perimeter of the fourth square = 4 x 8 = 32
  • Perimeter of the fifth square = 4 x 5.33 = 21.32

Total perimeter = 281.32 units

To learn how a square, please check: brainly.com/question/9030544

#SPJ1

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2 years ago
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