Answer:
8% or 80%
Step-by-step explanation:
$13.00 - $5.00 = $8.00
Answer:
![x=5+\sqrt{12}](https://tex.z-dn.net/?f=x%3D5%2B%5Csqrt%7B12%7D)
or
![x=5-\sqrt{12}](https://tex.z-dn.net/?f=x%3D5-%5Csqrt%7B12%7D)
Step-by-step explanation:
![x^2-10x+13=0](https://tex.z-dn.net/?f=x%5E2-10x%2B13%3D0)
![x^2-10x=-13](https://tex.z-dn.net/?f=x%5E2-10x%3D-13)
![x^2-10x+(\frac{10}{2})^2 =-13+(\frac{10}{2})^2](https://tex.z-dn.net/?f=x%5E2-10x%2B%28%5Cfrac%7B10%7D%7B2%7D%29%5E2%20%3D-13%2B%28%5Cfrac%7B10%7D%7B2%7D%29%5E2)
![x^2-10x+(5)^2=-13+(5)^2](https://tex.z-dn.net/?f=x%5E2-10x%2B%285%29%5E2%3D-13%2B%285%29%5E2)
![x^2-10x+25=-13+25\\x^2-10x+25=12](https://tex.z-dn.net/?f=x%5E2-10x%2B25%3D-13%2B25%5C%5Cx%5E2-10x%2B25%3D12)
Factor.
![(x-5)^2=12](https://tex.z-dn.net/?f=%28x-5%29%5E2%3D12)
Extract the square root.
![x-5=\frac{+}{} \sqrt{12}](https://tex.z-dn.net/?f=x-5%3D%5Cfrac%7B%2B%7D%7B%7D%20%5Csqrt%7B12%7D)
Add 5
![x=5+\sqrt{12}](https://tex.z-dn.net/?f=x%3D5%2B%5Csqrt%7B12%7D)
or
![x=5-\sqrt{12}](https://tex.z-dn.net/?f=x%3D5-%5Csqrt%7B12%7D)
Answer:
Answers are square root of 2, square root of 7,
Step-by-step explanation:
Irational is a number that is never ending.
Square root of 2 is irrational since there is no pattern to the number after the decimal.
10/ sqrt of 100. Sqrt of 100 is 10. 10/10 = 1 so this is not a irrational.
Sqrt of 7 does not have a pattern after the decimal point so it is irrational.
5.87 with a dash on top is rational since it means it has a pattern of continues 87's.
Last one it is equal to 2 so it is rattional.
I hope this helps.if you have any questions regarding what I did you can ask