Answer:
so ....where is the question?
Answer: 600
<u>Step-by-step explanation:</u>
20 x 30
= 2 x 10 x 3 x 10
= 2 x 3 x 10 x 10
= 6 x 100
= 600
The number of permutations of 8 people taken 6 at a time is given by:
Answer:
Your answer will be (6,1)
Step-by-step explanation:
I know this because a reflection over the x-axis is (x,y) -> (x,-y) If you apply this to (6,-1) you get (6,1).
You need to use the distance formula


so the distance between points (5,-2) and (-3,8) is

which won't simplify so it stays as is