Answer:
Step-by-step explanation:
If A ⊂ B, that is, A is a subset of B
Also, B ⊂ A, that is, B is a subset A
Therefore, A = B in all respect.
Answer:
Step-by-step explanation:
In system B, the first equation is the same, so clearly the <em>second</em> equation has been replaced. The only other equation in the system is the <em>first</em>, so that is the one that is multiplied by some number.
The number it is multiplied by must make the y coefficient be the opposite of the y-coefficient in the second equation, so they cancel when added. That is, the multiplier times -1 must be -4, so the multiplier must be <em>4</em>.
The purpose of doing this is to ensure the solution of System B <em>is exactly</em> the same as that of System A.
A)
A polygon is a closed shape so there must be at least three sides. Therefore, the least value that n can be would be three.
b)
n value
3 0
n(n-3)/2
3(3-3)/3
3(0)/3
0/3
0
4 2
n(n-3)/2
4(4-3)/2
4(1)/2
4/2
2
5 5
n(n-3)/2
5(5-3)/2
5(2)/2
10/2
5