If the police have 9 suspects how many different ways can they select 5 for a lineup
1 answer:
Assuming the order does not matter, you want the number of combinations of 9 things taken 5 at a time. The combinations can be shown as C(9,5), 9C5.
C(9, 5) =
9/5(9-5) =
9*8*7*6*5 / 5*4
The 5 terms cancel.
9*8*7*6 / 4*3*2 =
9*7*2 =
126
The above change is because 4*2 cancels the 8 in the numerator and 6/3 = 2
Therefore, the solution is 126.
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Area= i^2 + 4i
Area= length x width
Length (y)= i + 4
Width (i)=i
Answer:
The answer is 5 x 2 x 3 x 2 x 2
Step-by-step explanation:
It is just everything at the bottom multiplied together
-7 - 12 = -1(7 + 12) = -1(19) = -19
Your answer is A.
