Answer: He rides for 2.5 hours or 2 and a half hours.
Step-by-step explanation:
He needs to complete a trajectory of 22.5 kilometers.
He rides 9 kilometers per hour.
Divide the total by the amount of kilometers that he rides.
![\frac{22.5}{9}=2.5h](https://tex.z-dn.net/?f=%5Cfrac%7B22.5%7D%7B9%7D%3D2.5h)
Answer:
AC
Step-by-step explanation:
sin C = opp/hyp
For angle C, the opposite leg is AB. The hypotenuse is AC.
sin C = AB/AC
Answer:
![y = A_o (b)^t](https://tex.z-dn.net/?f=%20y%20%3D%20A_o%20%28b%29%5Et)
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:
![41.3= 82.6(b)^{12}](https://tex.z-dn.net/?f=%2041.3%3D%2082.6%28b%29%5E%7B12%7D)
And solving for b we got:
![\frac{1}{2}= b^{12}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%3D%20b%5E%7B12%7D)
And then we have:
![b= (\frac{1}{2})^{\frac{1}{12}}](https://tex.z-dn.net/?f=%20b%3D%20%28%5Cfrac%7B1%7D%7B2%7D%29%5E%7B%5Cfrac%7B1%7D%7B12%7D%7D)
And the model would be given by:
![y(t) = 82.6 (\frac{1}{2})^{\frac{1}{12}}](https://tex.z-dn.net/?f=%20y%28t%29%20%3D%2082.6%20%28%5Cfrac%7B1%7D%7B2%7D%29%5E%7B%5Cfrac%7B1%7D%7B12%7D%7D)
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:
![y = A_o (b)^t](https://tex.z-dn.net/?f=%20y%20%3D%20A_o%20%28b%29%5Et)
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:
![41.3= 82.6(b)^{12}](https://tex.z-dn.net/?f=%2041.3%3D%2082.6%28b%29%5E%7B12%7D)
And solving for b we got:
![\frac{1}{2}= b^{12}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%3D%20b%5E%7B12%7D)
And then we have:
![b= (\frac{1}{2})^{\frac{1}{12}}](https://tex.z-dn.net/?f=%20b%3D%20%28%5Cfrac%7B1%7D%7B2%7D%29%5E%7B%5Cfrac%7B1%7D%7B12%7D%7D)
And the model would be given by:
![y(t) = 82.6 (\frac{1}{2})^{\frac{1}{12}}](https://tex.z-dn.net/?f=%20y%28t%29%20%3D%2082.6%20%28%5Cfrac%7B1%7D%7B2%7D%29%5E%7B%5Cfrac%7B1%7D%7B12%7D%7D)
Answer:
175.929188601
Step-by-step explanation:
Answer:
ITS B!!!!!
Step-by-step explanation:
JUST TOOK THE TEST