Factor: 27x^2y - 43xy^2
Factors of 27:
1(27), 3(9)
Factors of 43:
1(43) no common number between these two.
Factor x, and y, as they present, therefore, the numbers cannot be factored. stay as is.
Your answer is: xy(27x - 43y)
Hope that helps!!!
9/20. Add 20+24+36=80. Then it's 36/80. Divide both the bottom and the top by 4 and you get 9/20.
Answer:
![\boxed{\sf x = \dfrac{1}{21}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Csf%20x%20%3D%20%5Cdfrac%7B1%7D%7B21%7D%7D)
Explanation:
![\rightarrow \sf 3x+7-6= \dfrac{8}{7} - 0](https://tex.z-dn.net/?f=%5Crightarrow%20%5Csf%203x%2B7-6%3D%20%5Cdfrac%7B8%7D%7B7%7D%20%20-%200)
simplify the following
![\rightarrow \sf 3x+1= \dfrac{8}{7}](https://tex.z-dn.net/?f=%5Crightarrow%20%5Csf%203x%2B1%3D%20%5Cdfrac%7B8%7D%7B7%7D)
subtract 1 from both sides
![\rightarrow \sf 3x+ 1 -1= \dfrac{8}{7} - 1](https://tex.z-dn.net/?f=%5Crightarrow%20%5Csf%203x%2B%201%20-1%3D%20%5Cdfrac%7B8%7D%7B7%7D%20%20%20-%201)
simplify the following
![\rightarrow \sf 3x= \dfrac{1}{7}](https://tex.z-dn.net/?f=%5Crightarrow%20%5Csf%203x%3D%20%5Cdfrac%7B1%7D%7B7%7D)
multiply both sides by 1/3
![\rightarrow \sf 3x \cdot \dfrac{1}{3}= \dfrac{1}{7}\cdot \dfrac{1}{3}](https://tex.z-dn.net/?f=%5Crightarrow%20%5Csf%203x%20%5Ccdot%20%5Cdfrac%7B1%7D%7B3%7D%3D%20%5Cdfrac%7B1%7D%7B7%7D%5Ccdot%20%5Cdfrac%7B1%7D%7B3%7D)
simplify the following
![\rightarrow \sf x = \dfrac{1}{21}](https://tex.z-dn.net/?f=%5Crightarrow%20%5Csf%20x%20%3D%20%5Cdfrac%7B1%7D%7B21%7D)
Since the diameter is 6 cm, the radius is 3 cm. Use the area formula to get 113.04 cm squared. Then, you multiply that by the height of the rod, which is 20 cm. The volume of one rod is 2260.8 cm cubed. To find how much steel is needed for 189 rods, multiple the volume of one rod by 189. Your answer should be 427291.2 cm³.
Answer:
3
Step-by-step explanation:
3x+2y=12
5x-7=y
3x+2(5x-7)=12
3x+10x-14=12
13x=12+14
13x=26
x=2
3(2)+2y=12
6+2y=12
2y=12-6
y=6/2
y=3