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vaieri [72.5K]
3 years ago
5

Sarah already had 45 stamps in her collection and she gets 7 new stamps each month how long will it take before she has 129 stam

ps in her collection ?
Mathematics
2 answers:
tatuchka [14]3 years ago
3 0
The answer is:  " 12 months " .
________________________________
Explanation:
________________________________
(129 − 45) / 7 = 84 / 7 = 12 mos.
________________________________
inessss [21]3 years ago
3 0
Its will take her 12 months
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Semenov [28]

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> using a quadratic equation solver on a calculator but you can also use the quadratic equation = [-b+/- √(b²-4ac)]/(2a)
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