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Varvara68 [4.7K]
3 years ago
10

Alice joue à un jeu sur son smartphone et fait 3 parties. Dans ce jeu, on peut gagner des pièces d’une partie à l’autre et en dé

penser pour améliorer son personnage.
A la 1ère partie, Alice double son nombre de pièces et en dépense ensuite 30.
A la 2ème partie, Alice triple son nombre de pièces et en dépense 54.
A la 3ème partie, elle quadruple son nombre de pièces et en dépense 72.
Il lui reste alors 48 pièces. Combien de pièces avait-elle au départ ?
C'est des équations svp vous pouvez m'aider je n'y arrive vraiment pas (expliquer pls j'aimerais comprendre)
Mathematics
1 answer:
qwelly [4]3 years ago
3 0

Answer:

sorry, i dont understand french

Step-by-step explanation:

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You can buy 3 sandwiches for 4:$4.95 or 4 sandwiches for $6.72.Which is a better buy?
elixir [45]
If you would like to know which one of the options is better to buy, you can calculate this using the following steps:

3 sandwiches ... $4.95
1 sandwich ... $x = ?
______________________
3 * x = 1 * 4.95       /3
x = 4.95 / 3 = $1.65


4 sandwiches ... $6.72
1 sandwich ... $y = ?
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4 * y = 1 * 6.72     /4
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Result: You should buy sandwiches from the first option ($1.65 < $1.68 per unit).
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3 years ago
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Answer:

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Step-by-step explanation:

The volume of a prism is given by ...

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richard spends 1/8 of his money on fruits 1/2 on vegetables and saves the rest.what fraction of his money did he save?​
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