Q-R/S first you write the difference so difference is subtraction, then you put that over S showing you are dividing the two.
You have to make the denominator the same: 40
35/40 + 32/40 = 67/40
Answer:
25 transwind
Step-by-step explanation:
the wind speed in your country is probably 4cm and in the next six hours is going to change to carbon dioxide speed which is 25 transpiring
The solution to the system is (8, -12).
Step-by-step explanation:
Given equations are;
1/4x-1/2y=8 Eqn 1
1/2x+3/4y=-5 Eqn 2
Multiplying both equations by 4
![4(\frac{1}{4}x-\frac{1}{2}y=8),\ \ \ \ 4(\frac{1}{2}x+\frac{3}{4}y=-5)\\4*\frac{1}{4}x-\frac{1}{2}y*4=8*4, \ \ \ \ 4*\frac{1}{2}x+\frac{3}{4}y*4=-5*4\\x-2y=32 \ \ \ Eqn \ 3\ , \ \ \ \ 2x+3y=-20\ \ \ \ Eqn\ 4](https://tex.z-dn.net/?f=4%28%5Cfrac%7B1%7D%7B4%7Dx-%5Cfrac%7B1%7D%7B2%7Dy%3D8%29%2C%5C%20%5C%20%5C%20%5C%204%28%5Cfrac%7B1%7D%7B2%7Dx%2B%5Cfrac%7B3%7D%7B4%7Dy%3D-5%29%5C%5C4%2A%5Cfrac%7B1%7D%7B4%7Dx-%5Cfrac%7B1%7D%7B2%7Dy%2A4%3D8%2A4%2C%20%5C%20%5C%20%5C%20%5C%204%2A%5Cfrac%7B1%7D%7B2%7Dx%2B%5Cfrac%7B3%7D%7B4%7Dy%2A4%3D-5%2A4%5C%5Cx-2y%3D32%20%5C%20%5C%20%5C%20Eqn%20%5C%203%5C%20%2C%20%5C%20%5C%20%5C%20%5C%202x%2B3y%3D-20%5C%20%5C%20%5C%20%5C%20Eqn%5C%204)
Multiplying Eqn 3 by -2
![-2(x-2y=32)\\-2x+4y=-64\ \ \ \ Eqn\ 5](https://tex.z-dn.net/?f=-2%28x-2y%3D32%29%5C%5C-2x%2B4y%3D-64%5C%20%5C%20%5C%20%5C%20Eqn%5C%205)
Adding Eqn 4 and Eqn 5
![(2x+3y)+(-2x+4y)=-20+(-64)\\2x+3y-2x+4y=-20-64\\7y=-84](https://tex.z-dn.net/?f=%282x%2B3y%29%2B%28-2x%2B4y%29%3D-20%2B%28-64%29%5C%5C2x%2B3y-2x%2B4y%3D-20-64%5C%5C7y%3D-84)
Dividing both sides by 7
![\frac{7y}{7}=\frac{-84}{7}\\y=-12](https://tex.z-dn.net/?f=%5Cfrac%7B7y%7D%7B7%7D%3D%5Cfrac%7B-84%7D%7B7%7D%5C%5Cy%3D-12)
Putting y=-12 in Eqn 3
![x-2(-12)=32\\x+24=32\\x=32-24\\x=8](https://tex.z-dn.net/?f=x-2%28-12%29%3D32%5C%5Cx%2B24%3D32%5C%5Cx%3D32-24%5C%5Cx%3D8)
The solution to the system is (8, -12).
Keywords: linear equations, addition
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Answer:.
Step-by-step explanation:
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