Answer:
6
Step-by-step explanation:
Answer:
4x-y=19, y=4x-19
Step-by-step explanation:
I learned a really quick way to do these in geometry.
Let's use standard form or ax+by=c.
Slope of 4: 4x - y = c.
Passes through point 6,5.
4(6) - 5 = c
c= 24-5
c=19
4x-y=19
y=4x-19
Answer:
![\large\boxed{4x^2-25=(2x-5)(2x+5)}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7B4x%5E2-25%3D%282x-5%29%282x%2B5%29%7D)
Step-by-step explanation:
![a^2-b^2=(a-b)(a+b)\\\\4x^2-25=2^2x^2-5^2\qquad\text{use}\ (ab)^n=a^nb^n\\\\=(2x)^2-5^2=(2x-5)(2x+5)](https://tex.z-dn.net/?f=a%5E2-b%5E2%3D%28a-b%29%28a%2Bb%29%5C%5C%5C%5C4x%5E2-25%3D2%5E2x%5E2-5%5E2%5Cqquad%5Ctext%7Buse%7D%5C%20%28ab%29%5En%3Da%5Enb%5En%5C%5C%5C%5C%3D%282x%29%5E2-5%5E2%3D%282x-5%29%282x%2B5%29)
I hope this helps, this is what I got
x/4 +18 ( x over 4 plus 18) :)
Answer:42 dollars
Step-by-step explanation: