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Alla [95]
2 years ago
7

Determine the approximate value of angle A​

Mathematics
1 answer:
kupik [55]2 years ago
6 0

answer

40°

step by step explanation

according to the figure the two angles are given

the sum of all angles of triangle is 180°

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Answer:

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Step-by-step explanation:

thay y = 4x + 25 vào phương trình y = 2x ^ 2 + 9x ta có:

4x + 25 = 2x ^ 2 + 9x

⇒2x ^ 2 + 5x - 25 = 0

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thay x = 5/2 vào phương trình y = 4x + 25 ⇒ y = 4*(5/2) + 25 = 35

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