Kate has 50 quarters and dimes. she has a total of $9.80. how many dimes that she have?

Mathematics

1 answer:

zaharov [31]3 years ago

7 0

Is there multiple choice answers? If so I would love to help.

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X^2 + 18x + c = 25 +c

svet-max [94.6K]

Rearrange to: x^2 + 18x - 25 = 0
Then factorise (I like to do it by completing the square):
(x + 9)^2 -81 -25 = 0
(x + 9)^2 = 106
x + 9 = sqrt(106)
The sol'ns are:
x = -9 + and - sqrt(106)

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aev [14]

Answer:

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Step-by-step explanation:

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Annette [7]

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Licemer1 [7]

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Sedbober [7]

Sry that I can’t answer but I hope u have a great day
Yxucivb:)

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