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3 years ago

Im thinking of a number. if i add this number to its reciprocal, i get 2. what is the number?

Mathematics

1 answer:

Mademuasel [1]3 years ago

7 0

the only number it can be is 1 as 1 + $\frac{1}{1}$ ( the reciprocal of 1 )

thus 1 + $\frac{1}{1}$ = 2

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Question 11 Find the value of y. X+ 13 45° No links please! Thanks for the help!

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Answer:

First option: $13 \sqrt{2}$

Step-by-step explanation:

$cosθ = \frac{adj}{hyp}$

$cos45° = \frac{13}{y}$

Multiply both sides by y:

$y(cos45°) = 13$

$y ( \frac{ \sqrt{2} }{2} ) = 13$

$y = 13 \div \frac{ \sqrt{2} }{2}$

$y = 13 \times \frac{2}{ \sqrt{2} }$

$y = \frac{26}{ \sqrt{2} } ( \frac{ \sqrt{2} }{ \sqrt{2} } )$

$y = \frac{26 \sqrt{2} }{2}$

$y = 13 \sqrt{2}$

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3 years ago

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3 years ago

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svetlana [45]

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4 years ago

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4 years ago

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Answer:

Step-by-step explanation:

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