Answer:
x=−50
Step-by-step explanation:
By using the information you have, you can use make a proportion to solve this.
You burn 4 logs in 2 hours or 4/2. You are comparing this to your unknown number, x, over 8 hours. So it looks like this 4/2 = x/8. You read it as four logs in two hours is x logs in eight hours. To solve you cross multiply. You do 2 times x and 4 times eight. That would be 2x= 32. Your goal is getting x alone, so divide each side by 2. Your answer is x= 16 logs in eight hours. You can solve this different and maybe easier ways but this is the best way if you want to get used to going this in algebra. Hope that helps! :)
Answer:
Step-by-step explanation:
![y^2-11y+n\\=(y-(11/2))^2+n-(11/2)^2](https://tex.z-dn.net/?f=y%5E2-11y%2Bn%5C%5C%3D%28y-%2811%2F2%29%29%5E2%2Bn-%2811%2F2%29%5E2)
So in order the trinomial a perfect square we need
![n-(11/2)^2 =0\\n= (11/2)^2\\n=\frac{121}{4}](https://tex.z-dn.net/?f=n-%2811%2F2%29%5E2%20%3D0%5C%5Cn%3D%20%2811%2F2%29%5E2%5C%5Cn%3D%5Cfrac%7B121%7D%7B4%7D)
When n is equal to this number that we have
![y^2-11y+n = (y- (11/2))^2](https://tex.z-dn.net/?f=y%5E2-11y%2Bn%20%3D%20%28y-%20%2811%2F2%29%29%5E2)
You said -x + 8 > 6
Subtract 8 from each side: -x > -2
Add 'x' to each side: 0 > -2 + x
Add 2 to each side: 2 > x
Now, test the choices:
A). Can 'x' be 4 ?
No. 2 is not greater than 4 .
B). Can 'x' be 1 ?
Yes. 2 is greater than 1 .
C). Can 'x' be 2 ?
No. 2 is not greater than 2 .
D). Can 'x' be 15 ?
No. 2 is not greater than 15 .
Answer:
the second one
Step-by-step explanation:
Its measuring by miles per hour