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adell [148]
3 years ago
13

1. Is 2/12 = 5/28 a true proportion?

Mathematics
2 answers:
Tomtit [17]3 years ago
7 0

Answer:

  • See below

Step-by-step explanation:

<h3>Step 1</h3>
  • 2/12 = 5/28
  • 2*28 = 12*5
  • 56 = 60

False equation

<h3>Step 2</h3>
  • No, because the cross products are not equal.
  • The proportion is not true, because 2/12 and 5/28 are not equivalent ratios.
Oliga [24]3 years ago
5 0
<h3>Solution (1):</h3>

<u>We know that:</u>

  • Given proportion: 2:12 = 5:28

Step-by step calculations:

<u>Simplify the LHS:</u>

  • 2:12 = 5:28
  • => 1:6 = 5:28

Remember:<em> (a:b = c:d) = (a x d = b x c)</em>

<u>Use cross multiplication:</u>

  • => 1:6 = 5:28
  • => 28 = 30 (False)
<h3>Solution (2):</h3>
  • No, because the cross products are not equivalent.
  • The proportion is not true, because 2/12 and 5/28 are not equivalent ratios.

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