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viva [34]
3 years ago
5

Keith bought 5 new baseball trading cards to add to his collection. The next day his dog ate half of his collection. There are n

ow only 40 cards left. How many cards did Keith
start with?
Mathematics
1 answer:
AysviL [449]3 years ago
8 0

Answer:

85 cards

Step-by-step explanation:

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Step-by-step explanation:

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Please solve equations by completing square
BlackZzzverrR [31]
x^2-4x+1=0\\
x^2-4x+4-3=0\\
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x=2+\sqrt3 \vee x=2-\sqrt3

x^2+6x-9=0\\
x^2+6x+9-18=0\\
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x^2-2x-5=0\\
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8 0
3 years ago
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