Answer:
you want to follow PEMDAS so you would multiply 27 by 1/3 to get 81.003, which you would round to 81, then you would multiply 8 to the third power and you would get 512.
Step-by-step explanation:
27(1/3)^3
81^3
512
7/9 is the answer because you have to find common denominators and all that
ANSWER
![P(not \: B) = \frac{1}{4}](https://tex.z-dn.net/?f=P%28not%20%5C%3A%20B%29%20%3D%20%20%5Cfrac%7B1%7D%7B4%7D%20)
EXPLANATION
If A and B are independent events, then
P(A and B)=P(A)×P(B)
![\frac{3}{10} = \frac{2}{5} \times \: P(B)](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B10%7D%20%20%3D%20%20%5Cfrac%7B2%7D%7B5%7D%20%20%5Ctimes%20%20%5C%3A%20P%28B%29)
Multiply both sides by;
![\frac{5}{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B5%7D%7B2%7D%20)
![\frac{5}{2} \times \frac{3}{10} = \frac{5}{2} \times \frac{2}{5} \times \: P(B)](https://tex.z-dn.net/?f=%20%5Cfrac%7B5%7D%7B2%7D%20%20%5Ctimes%20%20%5Cfrac%7B3%7D%7B10%7D%20%20%3D%20%20%20%5Cfrac%7B5%7D%7B2%7D%20%20%5Ctimes%20%5Cfrac%7B2%7D%7B5%7D%20%20%5Ctimes%20%20%5C%3A%20P%28B%29)
![\frac{3}{4} =P(B)](https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B4%7D%20%20%3DP%28B%29)
![P(not \: B) = 1 - P(B)](https://tex.z-dn.net/?f=P%28not%20%5C%3A%20B%29%20%3D%201%20-%20P%28B%29)
![P(not \: B) = 1 - \frac{3}{4}](https://tex.z-dn.net/?f=P%28not%20%5C%3A%20B%29%20%3D%201%20-%20%5Cfrac%7B3%7D%7B4%7D%20)
![P(not \: B) = \frac{1}{4}](https://tex.z-dn.net/?f=P%28not%20%5C%3A%20B%29%20%3D%20%20%5Cfrac%7B1%7D%7B4%7D%20)
Answer:
it should be 3x + something
Step-by-step explanation: