Answer:
C
Step-by-step explanation:
For the second problem the answer D, -9, -11
Step-by-step explanation:
3n + 6( -8n + 9)
= 3n - 48n + 54
= - 45n + 54
Hope it will help
Answer:
![\frac{1}{12y}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B12y%7D)
Step-by-step explanation:
This is a multiplication problem.
We want to multiply ![\frac{9z^3}{16xy}\cdot \frac{4x}{27z^3}](https://tex.z-dn.net/?f=%5Cfrac%7B9z%5E3%7D%7B16xy%7D%5Ccdot%20%5Cfrac%7B4x%7D%7B27z%5E3%7D)
We factor to get:
![\frac{9z^3}{4\times 4xy}\cdot \frac{4x}{9\times 3z^3}](https://tex.z-dn.net/?f=%5Cfrac%7B9z%5E3%7D%7B4%5Ctimes%204xy%7D%5Ccdot%20%5Cfrac%7B4x%7D%7B9%5Ctimes%203z%5E3%7D)
We now cancel out the common factors to get:
![\frac{1}{4\times y}\cdot \frac{1}{1\times 3}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%5Ctimes%20y%7D%5Ccdot%20%5Cfrac%7B1%7D%7B1%5Ctimes%203%7D)
We now multiply the numerators and the denominators separately to get.
This simplifies to ![\frac{1}{12y}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B12y%7D)
Therefore the simplified expression is ![\frac{1}{12y}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B12y%7D)