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alisha [4.7K]
2 years ago
8

Please helppppppp!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Olin [163]2 years ago
6 0

So here, ABCD is being inscribed in a circle, so ABCD is a cyclic quadrilateral (as inscribed in a circle) also, there exists a property of cyclic quadrilateral, i.e, the sum of opposite angles of a cyclic quadrilateral is 180°, so we can just write the following equation using this :

{:\implies \quad \sf y^{\circ}+83^{\circ}=180^{\circ}}

{:\implies \quad \sf y^{\circ}=180^{\circ}-83^{\circ}}

{:\implies \quad \sf y^{\circ}=97^{\circ}}

{:\implies \quad \boxed{\bf{y=97}}}

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Jane works twice as fast as her daughter Anna. If it takes 15 minutes to clean the kitchen together, how long would it take Anna
Sonbull [250]
Here, Twice fast means, she takes half time in doing same amount of work.
Let, Anna takes = 2t & Jane takes = t

It would be: 1/t + 1/2t = 1/15
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In short, Anna would take 45  minutes

Hope this helps!
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