O and I are the circumcentre and incentre of ΔABC respectively.Suppose O lies in the interior ΔABC and I lies on the circle passing through B,O,C.∠BAC=?

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O and I are the circumcentre and incentre of ΔABC respectively.Suppose O lies in the interior ΔABC and I lies on the circle passing through B,O,C.∠BAC=?

If 1 = sa + tb, where a, b, st ∈ Z, explain why gcd(a, b) = 1.

With steps please using the epsilom-delta definition

Students have been pre-selling tickets to the event: adult tickets are $5.00 and child tickets are $2.50. They expect about 13,000 people to attend the event.

Students have been pre-selling tickets to the event: adult tickets are $5.00 and child tickets are $2.50. They expect about 13,000 people to attend the event.

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What is it simplified

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1 less than four times the sum of a number and 2

Set up equation and solve

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I need help with this particular question.

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