Ear= La oreja
Mouth=La boca
Elbow=. El codo
Hand=La Mano
Answer:

With
the initial amount and t the time on hours and t the time in hours. since the half life is 12 hours we can find the parameter of decay like this:

And solving for b we got:

And then we have:

And the model would be given by:

Step-by-step explanation:
Assuming this complete question: "A specific radioactive substance follows a continuous exponential decay model. It has a half-life of 12 hours. At the start of the experiment, 82.6g is present.
"
For this case we can create a model like this one:

With
the initial amount and t the time on hours and t the time in hours. since the half life is 12 hours we can find the parameter of decay like this:

And solving for b we got:

And then we have:

And the model would be given by:

Answer:
2/7
Step-by-step explanation:
There are 22 (12 + 10) total students in the class. That means that the chance of the first student picked being a girl is 12/22.
Now, we must calculate the chance of the next student to be picked <em>also </em>being a girl - however, there is a trap here! Remember that since a girl has been picked, the total student pool has decreased to 21 and and the total number of girls has decreased to 11. This means the new chance of girl being picked is 11/21.
To find the probability of both these events happening in conjunction, these fractions must be multiplied. 12/22 * 11/21 = 132/462, which simplifies to 2/7.
Answer:
9736 times 704 is 6854144