Answer:
The answer is A. pi=pf
Step-by-step explanation:
Just took the test
Answer:
![Distance=13\ units](https://tex.z-dn.net/?f=Distance%3D13%5C%20units)
Step-by-step explanation:
<u><em>Distance between two points:</em></u> Distance between two pints
is given by
![d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B%28x_2-x_1%29%5E2%2B%28y_2-y_1%29%5E2%7D)
Distance between ![(-9,-4)\ and\ (-4,8).](https://tex.z-dn.net/?f=%28-9%2C-4%29%5C%20and%5C%20%28-4%2C8%29.)
![d=\sqrt{(-4-(-9))^2+(8-(-4))^2}\\\\d=\sqrt{(-4+9)^2+(8+4)^2}\\\\d=\sqrt{(5)^2+(12)^2}=\sqrt{25+144}\\\\d=\sqrt{169}\\\\d=13](https://tex.z-dn.net/?f=d%3D%5Csqrt%7B%28-4-%28-9%29%29%5E2%2B%288-%28-4%29%29%5E2%7D%5C%5C%5C%5Cd%3D%5Csqrt%7B%28-4%2B9%29%5E2%2B%288%2B4%29%5E2%7D%5C%5C%5C%5Cd%3D%5Csqrt%7B%285%29%5E2%2B%2812%29%5E2%7D%3D%5Csqrt%7B25%2B144%7D%5C%5C%5C%5Cd%3D%5Csqrt%7B169%7D%5C%5C%5C%5Cd%3D13)
<span>0=10, which is " never true" , and this leads to " no solution" also</span>
Mean = (2+4+6+5+2)/5 = 19/5 = 3.8
answer
<span>C. 3.8</span>
If I were solving this equation, I would put x^2-20x+(100)=(10). Since this is in standard form, you could change this into vertex form by making the equation y=(x-10)^2 -10.