<span>When order does not matter you use what is called n choose k formula
n!/(k!(n-k)!) where n is the number of things to choose from and k is the number of choices made, in this case:
20!/(4!(20-4)!)=4845</span>
L=3$-x×2 x=D hope this helps?
All it did was it counter clock wise rotated to make the shape look like it’s a mirror
Answer:
No, the correct answer of 
= 
Step-by-step explanation:
The given expression is
As we know that a mixed fraction
can be converted into proper or improper fraction as 
⇒ 
= 
and, 
= 
Hence, the simplified expression = 
or, =
