Answer:
55+x+74+54= 180 degree ( being the sum of all angle of the triangle )
or, 183 +x = 180degree
or, x=(180-183)degree
or, x= -3degree ans
Answer:
n=11 or n=-3
Step-by-step explanation:
Consider the quadratic equation ![n^2-8n-27=6.](https://tex.z-dn.net/?f=n%5E2-8n-27%3D6.)
First, remind the formula
![(a-b)^2=a^2-2ab+b^2](https://tex.z-dn.net/?f=%28a-b%29%5E2%3Da%5E2-2ab%2Bb%5E2)
To complete the square, note that
![8n=2\cdot n\cdot 4](https://tex.z-dn.net/?f=8n%3D2%5Ccdot%20n%5Ccdot%204)
Hence, we need ![+4^2](https://tex.z-dn.net/?f=%2B4%5E2)
Add 16 to both sides of equation:
![n^2-8n+16-27=6+16\\ \\(n-4)^2-27=22\\ \\(n-4)^2=49\\ \\n-4=7\text{ or }n-4=-7\\ \\n=11\text{ or }n=-3](https://tex.z-dn.net/?f=n%5E2-8n%2B16-27%3D6%2B16%5C%5C%20%5C%5C%28n-4%29%5E2-27%3D22%5C%5C%20%5C%5C%28n-4%29%5E2%3D49%5C%5C%20%5C%5Cn-4%3D7%5Ctext%7B%20or%20%7Dn-4%3D-7%5C%5C%20%5C%5Cn%3D11%5Ctext%7B%20or%20%7Dn%3D-3)
Answer:
Already answered but oh well
It's -4
Answer:
bruh i need too see the lines send the lines lol
Step-by-step explanation:
Answer:
C) x2 + x = 306
Step-by-step explanation:
x2 + x = 306
x2 + x - 306 = 0
x2 + 18x - 17x + 18 * (-17) = 0
x ( x + 18) - 17 (x +18) =0
(x + 18) (x - 17 ) = 0
x = -18 or 17