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zhannawk [14.2K]
2 years ago
10

Help me with my work, please

Mathematics
1 answer:
Luda [366]2 years ago
4 0

Answer:

What do you need help with

Step-by-step explanation:

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Which expression is equivalent 3/4(3x-5)
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Which expression is equivalent to 1/2 (2+ 3x – 6)?

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What are all the real zeros of y = (x - 12)3 - 10?
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3 years ago
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A radioactive substance has a continuous decay rate of 0.056 per minute. How many grams of a 120 gram sample will remain radioac
sammy [17]

Answer:

The mass of the radioactive sample after 40 minutes is 12.8 g.

Step-by-step explanation:

The mass of the sample can be found by using the exponential decay equation:

N_{t} = N_{0}e^{-\lambda t}

Where:

N(t): is the amount of the sample at time t =?

N₀: is the initial quantity of the sample = 120 g

t = 40 min

λ: is the decay constant =  0.056 min⁻¹

Hence, the mass of the sample after 40 min is:

N_{t} = N_{0}e^{-\lambda t} = 120g*e^{-0.056min^{-1}*40 min} = 12.8 g

     

Therefore, the mass of the radioactive sample after 40 minutes is 12.8 g.

I hope it helps you!

5 0
3 years ago
Find 2/3 of 3/4 of 24
Aleksandr-060686 [28]

Answer:

the answer is 12 which is a whole number

Step-by-step explanation:

i just multiplied them into my phone calculator and got the answer then checked my work. i really hope this helps and don't mind to BRAINLIEST PLZ

4 0
2 years ago
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