Answer:ab
Step-by-step explanation:3-9=-6 +7=1 1ab also equals just ab
These two angles are corresponding angles,
so they are congruent.
12x - 4 = 10x + 10
2x = 14
x=7
The tree died about 3357 years ago.
Explanation:
The half life of carbon - 14 is given by
where ![A(t)=0.5](https://tex.z-dn.net/?f=A%28t%29%3D0.5)
![A(0)=1](https://tex.z-dn.net/?f=A%280%29%3D1)
![t=5600](https://tex.z-dn.net/?f=t%3D5600)
Substituting these values in the above equation, we get,
![0.5=1e^{-5600k}](https://tex.z-dn.net/?f=0.5%3D1e%5E%7B-5600k%7D)
Taking In on both sides of the equation, we get,
![In(0.5)=-5600k](https://tex.z-dn.net/?f=In%280.5%29%3D-5600k)
![\frac{In(0.5)}{-5600} =k](https://tex.z-dn.net/?f=%5Cfrac%7BIn%280.5%29%7D%7B-5600%7D%20%3Dk)
![0.00012377=k](https://tex.z-dn.net/?f=0.00012377%3Dk)
Since, only 66% of Carbon - 14 remains after the time T.
Thus, we have,
![0.66=1e^{-kT}](https://tex.z-dn.net/?f=0.66%3D1e%5E%7B-kT%7D)
Taking In on both sides of the equation, we get,
![In(0.66)=-0.00012377 \ T](https://tex.z-dn.net/?f=In%280.66%29%3D-0.00012377%20%5C%20T)
![\frac{In(0.66)}{-0.00012377} = T](https://tex.z-dn.net/?f=%5Cfrac%7BIn%280.66%29%7D%7B-0.00012377%7D%20%3D%20%20T)
![3357=T](https://tex.z-dn.net/?f=3357%3DT)
Thus, the tree died about 3357 years ago.
Answer:
Step-by-step explanation: c 55
Answer:
The answer is 30
Step-by-step explanation:
You have to do 5 times 2. 5 times 2 is 10. Then you have to do 10 times 3. 10 times 3 is 30. So you will get 30 as your answer.