No, any integer is a rational number tho
51.5 because 12x3=36 + 15.5= 51.5
Percent means out of 100 so 80/100.....
I belive its 5.4 or 4.9 if you use a calculator to get the spare root its 5.38516480713
Since the ratio of their similar sides are equal hence the triangles are similar
<h3>Scale factors</h3>
Two figures are are known to be similar if the ratio of their similar sides are equal to a constant known as the scale factor.
For the triangles given, take the ratio of the sides;
12/2 = 6
30/5 = 6
36/6 = 6
Since the ratio of their similar sides are equal hence the triangles are similar
Learn more on similar shapes here: brainly.com/question/2644832
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