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kramer
3 years ago
15

The number 0.8 can be written as 8 over 10, so it is an irrational number, true or false?!?!

Mathematics
2 answers:
ira [324]3 years ago
4 0
For a number to be rational by definition, a fractional representation of the number must exist.
So N = n/m is rational if n and m are integers.
Since it's given in fractional form it's rational by definition.
Hence false.
SSSSS [86.1K]3 years ago
4 0
It is false because the only way it would be true is if the decimal point had un-repeating numbers after is like 1.414124245... would be a great example. 
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The perimeter of the base of a regular quadrilateral prism is 60 cm, the area of a lateral face is 105 cm2. Find: the volume of
Harman [31]
Since the base is a regular quadrilateral, each of its 4 sides must have length
  s = P/4
  s = (60 cm)/4 = 15 cm

The area of one lateral face is the product of side length and height.
  A = s×h
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Then the height of the prism is
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The area of the base is then
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The volume of the prism is the product of its base area and height.
  V = Bh
  V = (225 cm²)×(7 cm) = 1575 cm³


The volume is 1575 cm³.
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3 years ago
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Alenkasestr [34]
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6 0
4 years ago
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EleoNora [17]

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Step-by-step explanation:

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