Answer:
x=2.17
Step-by-step explanation:
14.88+x=17.05
We move all terms to the left:
14.88+x-(17.05)=0
We add all the numbers together, and all the variables
x-2.17=0
We move all terms containing x to the left, all other terms to the right
x=2.17
Answer:
11x - 10
Step-by-step explanation:
ab is half the line and bc is the other half
so if you add them together that should be the answer.
6x - 7 + 5x - 3
11x - 10
Answer:
x = 3 or 7
Step-by-step explanation:
Solve by completing the square:
![x^2 - 10x + 1 = -20](https://tex.z-dn.net/?f=x%5E2%20-%2010x%20%2B%201%20%3D%20-20)
First, move the constants to one side:
![x^2 - 10x = -21](https://tex.z-dn.net/?f=x%5E2%20-%2010x%20%3D%20-21)
Then, add
to both sides to make the right a perfect square trinomial, which is easy to factor:
![x^2 - 10x + (\frac{-10}{2})^2 = -21 + (\frac{-10}{2})^2](https://tex.z-dn.net/?f=x%5E2%20-%2010x%20%2B%20%28%5Cfrac%7B-10%7D%7B2%7D%29%5E2%20%3D%20-21%20%2B%20%28%5Cfrac%7B-10%7D%7B2%7D%29%5E2)
Simplify and Factor:
![x^2 - 10x + 25 = -21 + 25](https://tex.z-dn.net/?f=x%5E2%20-%2010x%20%2B%2025%20%3D%20-21%20%2B%2025)
![(x - 5)^2 = 4](https://tex.z-dn.net/?f=%28x%20-%205%29%5E2%20%3D%204)
Finally, square root both sides using the even roots property:
![\sqrt{(x - 5)^2} = \sqrt{4}](https://tex.z-dn.net/?f=%5Csqrt%7B%28x%20-%205%29%5E2%7D%20%3D%20%5Csqrt%7B4%7D)
x - 5 = ± 2
x = 5 ± 2
x = 3 or x = 7
Answer:
A and C
Step-by-step explanation: