Answer:
12P3 = 1320
Step-by-step explanation:
How you need select three persons of a group of twelve persons, but in the selection each member of the group has a different position, then you need use a permutation
Permutation is defined how

In our case n = 12 and r = 3
Thus

12P3 = 1320
The answer for the question below is C
Answer:
35
Step-by-step explanation:
15 plus 10 equals 25.
25 plus 10 equals 35.
Hope it helps!
Answer:
C = -6
Step-by-step explanation:
C = [2×1/4 + 1] ÷ [3×1/4 -1 ]
C = 3/2 ÷ -1/4
C = 3/2 × -4 = -6
C = 2d + 1 / 3d - 1
So, d = ( C + 1 ) / ( 3C - 2 )
A) 9a+6b
b)5c-3d
combine like terms*