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sergij07 [2.7K]
3 years ago
6

Emma is thinking of three numbers from 1 to 9 that have the sum of 20 find of the possible numbers

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
6 0
9+9+2=20
9+8+3=20
9+7+4=20
9+6+5=20
(These ones are kin of repeated but in a different order:)
9+5+6=20
9+4+7=20
9+3+8=20
9+2+9=20
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In circle O, m∠R = 30.8°. Find m∠NOQ.
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Given:

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Central angle theorem: According to this theorem, the central angle is always twice of subtended angle on the same arc.

Angle NOQ and angle NRQ are on the same arc but ∠NOQ is the central angle and ∠NRQ is the subtended angle on the arc NQ.

Using central angle theorem, we get

m\angle NOQ=2\times m\angle NRQ

m\angle NOQ=2\times m\angle R

m\angle NOQ=2\times 30.8^\circ

m\angle NOQ=61.6^\circ

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