3 years ago

Helppppp plssssss its urgent

Mathematics

2 answers:

fredd [130]3 years ago

8 0

It’s 9 I know bc I had that question

Veronika [31]3 years ago

4 0

Answer:

Step-by-step explanation:

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A 46 gram sample of a substance that is used to sterilize surgical instruments has a k-value of 0.1374. Find the substance's hal

mars1129 [50]

Answer:

$t=5.0days$

Step-by-step explanation:

Using the formula for the exponential decay that is $N=N_{0}e^{-kt}$ , we have N= $\frac{1}{2}{\times}46=23$ , $N_{0}=46$ and k=0.1374.

Thus, $N=N_{0}e^{-kt}$ becomes

$23=46{\times}e^{-0.1374t}$

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Taking log on both sides, we get

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3 years ago

Write a variable expression for 9 more than a number s.

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More than suggests addition.

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