Answer:
![8u+ 17 = 17 \\ 8u = 17 - 17 \\ 8u = 0\\ u = \frac{0}{8} \\ \boxed{u = 0}](https://tex.z-dn.net/?f=8u%2B%2017%20%3D%2017%20%5C%5C%208u%20%3D%2017%20-%2017%20%5C%5C%208u%20%3D%200%5C%5C%20u%20%3D%20%20%5Cfrac%7B0%7D%7B8%7D%20%20%5C%5C%20%20%5Cboxed%7Bu%20%3D%200%7D)
<h3><u>u=0</u> is the right answer.</h3>
Answer:
40% I think because it is easy to turn a number into percentage.
<h3>
Answer: 20 sides</h3>
Work Shown:
E = exterior angle = 18 degrees
n = number of sides of a regular polygon
n = 360/E
n = 360/18
n = 20
This is a 20 sided regular polygon. It is considered a regular icosagon.
Answer:
The roots are -2 and -3
Step-by-step explanation:
In the function x² + bx + c, <em>a</em> is equal to 1, then the factored form of this function is: (x - x1)*(x - x2) where x1 and x2 are the roots.
Wilma got the following expression:
(x - 1)*(x - 6) = x² - 6x - x + 6 = x² - 7x + 6, where '+6' is correct but '-7x' is incorrect.
Greg got the following expression:
(x + 1)*(x + 4) = x² + 4x + x + 4 = x² + 5x + 4, where '+5x' is correct but '+4' is incorrect.
Therefore the quadratic equation is: x² + 5x + 6. Its roots are:
![x = \frac{-b \pm \sqrt{b^2 - 4(a)(c)}}{2(a)}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B-b%20%5Cpm%20%5Csqrt%7Bb%5E2%20-%204%28a%29%28c%29%7D%7D%7B2%28a%29%7D%20)
![x = \frac{-5 \pm \sqrt{5^2 - 4(1)(6)}}{2(1)}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B-5%20%5Cpm%20%5Csqrt%7B5%5E2%20-%204%281%29%286%29%7D%7D%7B2%281%29%7D%20)
![x = \frac{-5 \pm 1}{2}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B-5%20%5Cpm%201%7D%7B2%7D)
![x_1 = \frac{-5 + 1}{2}](https://tex.z-dn.net/?f=x_1%20%3D%20%5Cfrac%7B-5%20%2B%201%7D%7B2%7D)
![x_1 = -2](https://tex.z-dn.net/?f=x_1%20%3D%20-2%20)
![x_2 = \frac{-5 - 1}{2}](https://tex.z-dn.net/?f=x_2%20%3D%20%5Cfrac%7B-5%20-%201%7D%7B2%7D)
![x_2 = -3](https://tex.z-dn.net/?f=x_2%20%3D%20-3%20)
Answer:
it's c, 80 degrees
Step-by-step explanation:
a triangle is like a straight line, but it has 3 different angles that all add up to 180 degrees