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Alina [70]
2 years ago
12

The square of a certain number plus ten is equal to 81​

Mathematics
1 answer:
Scorpion4ik [409]2 years ago
3 0

Answer:

x = ±8.43 (to 3sf)

Step-by-step explanation:

Let this number be x.

x² + 10 = 81

      x² = 81 - 10

           = 71

        x = ±√71

           = ±8.43 (to 3sf)

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Answer:

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Step-by-step explanation:

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8 0
3 years ago
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4 0
4 years ago
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weqwewe [10]
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natima [27]
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Work Shown:

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3 years ago
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