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Rudiy27
3 years ago
5

Is 2.78778777... a irational number

Mathematics
2 answers:
Cerrena [4.2K]3 years ago
7 0
If by the ellipses you mean to say that the number 7 repeats forever after that point, then it is not irrational. Any number which can be expressed with repeating decimals is not irrational. For example, pi is an irrational number because it has no repeating decimals, but 0.33333333... is not irrational because it can be expressed by simply saying 0.3 repeated.
adell [148]3 years ago
4 0
YES!!! 2.78778777 is an irrational number because it has endless numbers, and a irrational number cant be put as a fraction but rational numbers can be put as a fractio!!
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Hope it helps you.

4 0
3 years ago
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Olenka [21]
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Explanation:
7 0
3 years ago
The value of x is ?
allsm [11]
Answer: X = 42

Steps:
(3x + 12) + x = 180
3x + 12 + x = 180
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Check:
(3x + 12) + x = 180
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I would appreciate the brainliest if this was correct and had helpful & clear steps! :)
5 0
3 years ago
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6 0
3 years ago
At a certain time of day, the angle of elevation is 40°. To the nearest foot, find the height of a tree whose shadow is 31 feet
elena-s [515]

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Thus the height of the tree = 26 ft

7 0
3 years ago
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