The answer is 28.
<span>(x – 13)(x + 8) = 196
</span>x * x + x * 8 - 13 * x - 13 * 8 = 196
x² + 8x - 13x - 104 = 196
x² - 5x - 104 - 196 = 0
x² - 5x - 300 = 0
The general quadratic formula is ax² + bx + c = 0
In our equation: a = 1, b = -5, c = -300
![x_{1,2} = \frac{-b+/- \sqrt{ b^{2}-4ac } }{2a} = \frac{-(-5)+/- \sqrt{ (-5)^{2}-4*1*(-300) } }{2*1}=\frac{5+/- \sqrt{ 25+1200 } }{2}= \\ \\ = \frac{5+/- \sqrt{1225} }{2}= \frac{5+/-35}{2} \\ \\ x_1= \frac{5+35}{2}= \frac{40}{2} =20 \\ \\ x_2= \frac{5-35}{2}= \frac{-30}{2} =-15](https://tex.z-dn.net/?f=x_%7B1%2C2%7D%20%3D%20%5Cfrac%7B-b%2B%2F-%20%5Csqrt%7B%20b%5E%7B2%7D-4ac%20%7D%20%7D%7B2a%7D%20%3D%20%5Cfrac%7B-%28-5%29%2B%2F-%20%5Csqrt%7B%20%28-5%29%5E%7B2%7D-4%2A1%2A%28-300%29%20%7D%20%7D%7B2%2A1%7D%3D%5Cfrac%7B5%2B%2F-%20%5Csqrt%7B%2025%2B1200%20%7D%20%7D%7B2%7D%3D%20%5C%5C%20%5C%5C%20%3D%20%5Cfrac%7B5%2B%2F-%20%5Csqrt%7B1225%7D%20%7D%7B2%7D%3D%20%5Cfrac%7B5%2B%2F-35%7D%7B2%7D%20%5C%5C%20%5C%5C%20x_1%3D%20%5Cfrac%7B5%2B35%7D%7B2%7D%3D%20%5Cfrac%7B40%7D%7B2%7D%20%3D20%20%5C%5C%20%5C%5C%20x_2%3D%20%5Cfrac%7B5-35%7D%7B2%7D%3D%20%5Cfrac%7B-30%7D%7B2%7D%20%3D-15%20)
So, missing length is either:
x1 + 8 = 20 + 8 = 28
or
x2 + 8 = -15 + 8 = -7
Since, length of a triangle cannot be negative, the missing side length is 28
Answer:
Express the fraction in its simplest form.

What is the missing number?
common ratio = a4/a3 = a3/a2
8/a3 = a3/18
(a3)^2 = 8 * 18
(a3)^2 = 144
a3 = 12 or a3 = -12
common ratio = 8/12 or common ratio = 8/(-12)
common ratio = 2/3 or common ratio = -2/3
Answer: 12 or -12
Answer:
![\displaystyle 73](https://tex.z-dn.net/?f=%5Cdisplaystyle%2073)
Step-by-step explanation:
According to this model, both pairs of angles are congruent, therefore the long leg [<em>ED</em>] is ALSO congruent to <em>GD</em>.
I am joyous to assist you at any time.