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Alekssandra [29.7K]
3 years ago
13

What is y equal to ?

Mathematics
1 answer:
Oksana_A [137]3 years ago
7 0
To find the answer for this question you need to first understand that 3 angles of a triangle make up 180 degrees. To make a triangle you want to cut the shape down from the 82 degrees to the degrees X. You then will be left with angle Y, a 90 degree angle, and the angle cut in half (which would be 41). You add 41 to 90 to get 131, and subtract that from 180 to get 49 degrees as your angle Y. Hope this helped <3
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Ber [7]
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x=0.15
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3 years ago
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Help eight graders i don't understand this number 13
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Question number 8. Prove that 3 + √5 is an irrational number.​
Marina86 [1]

Answer :

Let's assume the opposite of the statement i.e., 3 + √5 is a rational number.

\\  \sf \: 3 +  \sqrt{5}  =  \frac{a}{b}   \\  \\   \qquad \: \tiny \sf{(where \:  \: a \:  \: and \:  \: b \:  \: are \:  \: integers \:  \: and \:  \: b \:  \neq \: 0)} \\

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Since, a, b and 3 are integers. So,

\\ \sf \:  \frac{p - 3b}{b}  \\  \\  \qquad \tiny \sf{ \: (is \:  \: a \:  \: rational \:  \: number \:) } \\

Here, it contradicts that √5 is an irrational number.

because of the wrong assumption that 3 + √5 is a rational number.

\\

Hence, 3 + √5 is an irrational number.

7 0
3 years ago
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Answer:

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