When you reflect a diagonal over a line of symmetry, the diagonal will land perfectly on the other diagonal (and vice versa). This suggests that one diagonal is a mirror copy of the other.
Another way to put it: The vertex points of the rectangle will swap when we reflect over a line of symmetry. A diagonal is simply the opposite vertex points joined together. So this is why the diagonals swap places (because the vertices line up perfectly when you apply the reflection).
We have that
x²<span>-20x
</span><span>Group
terms that contain the same variable
</span>(x²-20x)
Complete
the square
(x²-20x+10²)------> (x-10)²
the answer is
the number must be 100
Answer:
4/7 = 0.57142857……
Step-by-step explanation:
integer NO cause it has a decimal
irrational NO cause it can be written as a fraction
Natural NO cause it has decimals
Rational YES because it’s a fraction
whole NO cause decimals
Real YES cause it’s a number
Answer:
D
Step-by-step explanation:
I know because I am smart. Trust me, it is D.