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ira [324]
3 years ago
5

How do you mark brainiest answer?​

Mathematics
1 answer:
Hoochie [10]3 years ago
8 0

Answer:

there's a blue crown that shows up when either 2 people already answered or if it's been a few days since only 1 person answered, just click that

Step-by-step explanation:

idk if u know this but apparently u gain points for marking someone brainliest, i read that somewhere but i could be wrong

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A pair of equations is shown below.
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(2,3)

Step-by-step explanation:

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fenix001 [56]

Answer is provided in the image attached.

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If y varies directly as x and y=60 when x=12, find y if x=35
Drupady [299]

Answer: y=175

Step-by-step explanation: y&x

y=kx

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3 years ago
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Find \cos\left(\dfrac{13\pi}{12}\right)cos( 12 13π ​ )cosine, (, start fraction, 13, pi, divided by, 12, end fraction, )exactly
Leviafan [203]

Answer:

Step-by-step explanation:

cos(\frac{13\pi }{12} )\\=cos(\pi +\frac{\pi }{12} )\\=-cos(\frac{\pi }{12} )\\=-cos(\frac{\pi }{3} -\frac{\pi }{4} )\\=-[cos \frac{\pi }{3} cos\frac{\pi }{4} +sin\frac{\pi }{3} sin\frac{\pi }{4} ]\\=-[\frac{1}{2} *\frac{1}{\sqrt{2} } +\frac{\sqrt{3} }{2} *\frac{1}{\sqrt{2} } ]\\=-\frac{1+\sqrt{3} }{2\sqrt{2} }

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