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3 years ago

11

Together, John and Kevin have 72 pokemon cards. Kevin has 5 times as many cards as John. How many cards does each person have? S

how all work. Thank you,

1 answer:

Eduardwww [97]3 years ago

8 0

Answer:

John has 12 pokemon cards

Kevin has 60 pokemon cards

Step-by-step explanation:

let x = the # of pokemon cards John has

5x = the # of pokemon cards Kevin has

5x + x = 72

6x = 72

x = 12

5x = 60

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3 years ago

The half-life of a radioactive isotope is the time it takes for a quantity of the isotope to be reduced to half its initial mass

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$\boxed{6.875 \text{\: grams}}$

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Half-lives are how long it takes for half of a substance to decay. If you start with a certain amount and it decays for a certain amount of half-lives, you are dividing by $2^{x}$ , where <em>x</em> is equal to the amount of half-lives.

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2 years ago

So what would the answer be to 2/3 x 6/7

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2 years ago

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3 years ago