The first problem, all you need to do is combine like terms then isolate the n:
4n-2n=4
~subtract 2n from 4n (2n)
2n=4
~then divide both sides of the equation by 2 to isolate the n
n=4
The second problem follows the same steps of combining like terms and isolating the variable. Here, you'll have to combine 2 like terms:
-12=2+5v+2v
~first combine the variables which is just 5v+2v which is 7v
-12=2+7v
~then subtract 2 from both sides to isolate the 7v
-14=7v
~then divide both sides by 7 to isolate the v and get your answer
-2=v
Hope that helped!
The answer is 340.687 liters
Answer:
x = 16
Step-by-step explanation:
Verticle angles are always congruent, so:
(8x + 15) = 143
Now, we can solve to isolate x:
8x + 15 - 15 = 143 - 15 (subtract 15 from both sides)
8x/8 = 128/8 (divide both sides by 8)
x = 16
You can always plug in the value of x to the original equation to check your answer:
8(16) + 15 = 143
Answer:
4. I think its d
Step-by-step explanation:
try it!!!!!!!!!
Answer:
18 m/s
Step-by-step explanation:
We used the given expression for the wind power: 
replacing the power (on the left hand side of the equal sign) by 15.83 MegaWatts, and then solve for v which is raised to the power 3:
![P(v)=0.002713v^3\\15.83=0.002713v^3\\\frac{15.83}{0.002713} =v^3\\v^3=5834.87\\v=\sqrt[3]{5834.87} =18.003\frac{m}{s}](https://tex.z-dn.net/?f=P%28v%29%3D0.002713v%5E3%5C%5C15.83%3D0.002713v%5E3%5C%5C%5Cfrac%7B15.83%7D%7B0.002713%7D%20%3Dv%5E3%5C%5Cv%5E3%3D5834.87%5C%5Cv%3D%5Csqrt%5B3%5D%7B5834.87%7D%20%3D18.003%5Cfrac%7Bm%7D%7Bs%7D)
