Answer:
It would be 78.40 if it increase and decreases from its original price
2/3 of 52.20 =
3 into 52.20 =17.4
17.4 x 2 = 34.8
52.20 + 17.4 =69.6
All the numbers are composite, multiples of 3, and divisible by 2.
The graph shows a zero slope since the equation of this graph is y = 4. No matter what the input is, it will just give you the same output. The input doesn't really give a care to the output because the output is just the same all through out.
No.
The few right triangles that correspond to Pythagorean Triples (3, 4, 5, for example) will have integer-length sides. The vast majority will have at least one side that is irrational. (1, 1, √2, for example)
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Of course, there are an infinite number of Pythagorean Triples, and they can each be scaled by an infinite number of integer scale factors. However, the infinite number of real and irrational numbers is far greater.