Answer:

Step-by-step explanation:
We have been given an equation
. We are asked to find the solutions of our given equation.
We will use splitting the middle term method to solve quadratic equation.
We will split middle term of our given equation into parts such that whose product is
and whose sum is 3.
We know that such two numbers are
.




Using zero product property, we will get:



Therefore, the solutions for our given equation are
.
From the given information, we can note that angle1 and angle2 are corresponding angles with respect to line u. Angle2 and angle9 are alternate exterior angles with respect to the right vertical line and angle5 and angle7 are alternate interior angles with respect to line v.
Therefore, the theorems which justify the answer are, respectively: Corresponding angles theorem, Alternater exterior angles theorem and Alternate Interior angles theorem.
Answer:
5
Step-by-step explanation:
20/4 is 5 (4 sides)
The answer is B,which is 454 to be exact