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Tems11 [23]
3 years ago
13

The half-life of a radioactive kind of krypton is 3 minutes. How much will be left after 6 minutes, if you start with 32 grams o

f it?
Mathematics
1 answer:
Wittaler [7]3 years ago
5 0

Answer:

8 grams

Step-by-step explanation:

The half-life of a radioactive kind of krypton is 3 minutes. How much will be l6eft after 6 minutes, if you start with 32 grams of it?

The formula is given as

Nt = No(1/2) ^t/t½

Nt = 32 × (1/2) ^6/3

Nt = 8 grams

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Likurg_2 [28]

Answer:

18 gallons / 1 mintue

Step-by-step explanation:

So if for 2 minutes we have 36 gallons, then for one minute we will have 18 gallons.

This means the answer is the third one:

18 gallons / 1 mintue

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3 years ago
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2 years ago
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boyakko [2]
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6 0
2 years ago
Drea and Sajini both worked at a local ice cream shop over the summer. Together, they earned a total of $425. Drea earned $25 mo
Oksi-84 [34.3K]

Answer:

Sajini = 200

Drea = 225

Step-by-step explanation:

d = amount Drea earned

s = amount Sajini earned

Together they earned 425

d+s =425

d = s+25


The system of equations

d+s =425

d = s+25


I will use substitution to solve

Substitute d= s+25 into the first equation

d+s =425

(s+25) + s = 425

Combine like terms

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Subtract 25 from each side

2s+25-25 =425-25

2s = 400

Divide by 2

2s/2 =400/2

s =200

Sajini = 200

Now we need to find d

d = s+25

d = 200 + 25

d = 225

Drea = 225


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3 years ago
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I think the answer is 2:1
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