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ra1l [238]
3 years ago
12

The half life of a substance is 30 days. If there are 4.5 grams to start with, how much will be left after 23 days? Round to the

nearest tenth of a gram. Be sure to label your answer.
Mathematics
2 answers:
qaws [65]3 years ago
8 0

65.4Step-by-step explanation:KHAN

Mandarinka [93]3 years ago
6 0

Important formula:

N_t = N_0 (1/2)^\frac{t}{t_{1/2}}

Here, you are trying to find Nt and you have N0 = 4.5g, t = 23 days, t1/2 = 30 days. Plug the values in and you should get 2.7g left after 23 days.

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Please help it’s due by tonight! The other two were posted if you are confused so you can see the full problem
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4 years ago
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mylen [45]

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6 0
4 years ago
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Plzz help <br><br>find value of following : 2sin75°.cos15°​
polet [3.4K]

Answer:

\frac{2+\sqrt{3} }{2}

Step-by-step explanation:

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Given

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6 0
3 years ago
Harprr buys a flannel sheet online for 22.50.If shipping and handling are an additional 35% of the price,how much shipping and h
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