There are 5 letters in the word "prime"
Imagine we had 5 slots to fill. They are empty initially.
Slot 1 has 5 choices to pick from
Once we pick a letter, we have 4 choices left over for slot 2
Slot 3 will have 3 choices
Slot 4 will have 2 choices
Slot 5 will have 1 choice
We have this countdown: 5,4,3,2,1
which multiplies out to 5*4*3*2*1 = 120
There are 120 unique ways to arrange the letters. Order matters. Because order matters, this is a permutation.
1:2
Similar to the 1/2 fraction, 1:2 is a simplified ratio of a half.
Answer:
10 sq units
Step-by-step explanation:
The area of a triangle is 1/2bh
b= 5 units
h= 4 units
1/2(5)(4)= 10
We can divide 143.50 by 7. This gives us 20.5. This means that she works 20.5 hours a week or 21 hours if you round up.
The first one I think not sure