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Triss [41]
3 years ago
15

1. Solve x2 - 81 = 0.

Mathematics
1 answer:
zysi [14]3 years ago
3 0

Answer:

x = -9, 9.

Step-by-step explanation:

x^2 - 81 = 0

x^2 = 81

x = -9, 9.

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mario62 [17]

Answer:

15 or below

Step-by-step explanation:

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Answer:

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3 years ago
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6 0
3 years ago
Mr. Wolboldt and Mrs. Wolboldt went to Bob Evans for lunch. Their bill for the food was $26.50. If they plan on leaving a 20% ti
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