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goblinko [34]
3 years ago
8

Someone please helppp.!

Mathematics
2 answers:
Ivenika [448]3 years ago
7 0
D should be your answer because if you distributed, you would get 3x + 18, which in no way could work
Sever21 [200]3 years ago
4 0

Answer:

C

Step-by-step explanation:

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A 30 gram sample of a substance that's used to sterilize surgical instruments has a k-value of 0.1235. Find the substances half
jok3333 [9.3K]

Answer : The substances half life in days is, 5.6 days.

Step-by-step explanation :

Half life : It is defined as the amount of time taken by a radioactive material to decay to half of its original value.

All radioactive decays follow first order kinetics.

The relation between the half-life and rate constant is:

k=\frac{0.693}{t_{1/2}}

where,

k = rate constant = 0.1235 per days

t_{1/2} = half-life

Now put all the given values in the above formula, we get:

0.1235\text {days}^{-1}=\frac{0.693}{t_{1/2}}

t_{1/2}=5.6\text{ days}

Thus, the substances half life in days is, 5.6 days.

5 0
3 years ago
I’m soooo grateful for you guys that’s helping me!!!
nevsk [136]

Answer:

The answer is 10. Hope this helps!

3 0
2 years ago
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Help Please! I will mark you as brainlyest!!!
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2 years ago
Helpppppppppppppp meeeeeeeeeeeeeeeee plsssssssssssssssss!!!!!!!!!!!!!
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Answer:

a=13

Step-by-step explanation:

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a=13

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