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True [87]
3 years ago
13

The length of a rectangle is 3 centimeters less than twice its width. If the perimeter of the rectangle is 18 centimeters. find

its dimensions
Equation: ?

Length: ? Width: ?
Mathematics
1 answer:
Ede4ka [16]3 years ago
4 0

Answer:

  • equation: w +(2w -3) = 18/2
  • length = 5 cm
  • width = 4 cm

Step-by-step explanation:

Let w represent the width in cm. Then the length is 2w-3, 3 cm less than twice the width. The perimeter is twice the sum of these, so the sum of length and width is half the perimeter:

  w + (2w -3) = 18/2

  3w -3 = 9 . . . . collect terms

  3w = 12 . . . . add 3

  w = 4 . . . . divide by 3

  2w-3 = 2·4 -3 = 5 . . . . length

The equation is w + (2w -3) = 18/2; the length is 5; the width is 4.

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vesna_86 [32]

Answer:

Step-by-step explanation:

Percent literally means hundredth

%=p/100 so

p/100=3/10 so multiply each side by 100

p=300/10

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p=4%

So you can see the pattern here, multiply the fraction by one hundred and you have the ‘percentage’.

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Answer:

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3 years ago
Explain why you might want to write very large and very small numbers like the ones in the example problem in scientific notatio
slava [35]

Answer:

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5 0
3 years ago
What is the domain of the function shown in the graph?​
masha68 [24]

Answer:

(-∞, ∞)

Step-by-step explanation:

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STatiana [176]

Answer:

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Step-by-step explanation:

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