Answer:
Addition property justifies manipulation of the equations.
Step-by-step explanation:
Given:
Two equations.
⇒
...equation (i)
⇒
...equation (ii)
We have to identify the property which justifies the manipulation.
Note:
The Linear Combination Method:
- Adding (or subtracting) a multiple of one equation with the other equation, in such a way that either the x -terms or the y -terms cancel out.
- Then solve for x (or y) and substitute back to get the other values.
- Also known as the addition and the elimination method.
The above equation is following the linear combination method where x-values are added to find the y value.
Solving:
⇒
...(i)
⇒
...(ii)
⇒ <em>Adding both the equations.</em>
⇒ 
⇒ <em>Dividing both sides with 7.</em>
⇒ 
⇒ 
Addition property justifies manipulation of both the equations.
Answer:
N/a
Step-by-step explanation:
2*2-6*2+8=0
4-12+8=0
-8+8=0
0=0
Answer:
64
Step-by-step explanation:
5ft x 4ft = 20
4ft x 6ft = 24
5ft x 4ft =20
24+20+20=64
Hope this helps u
Answer: 
Step-by-step explanation:
Given: The first term of Geometric series : a=1
The seconds term of Geometric series : 
The common ratio between the terms is given by :-

We know that the sum of infinite geometric series is given by :-

Hence, the sum of the given infinite series = 