Answer:
It is a combination answer
495 ways
Step-by-step explanation:
In this question, we are tasked with calculating the number of ways in which a manager can select 4 people out of 12 for the Sunday evening shift.
Firstly, the question talks about selecting a particular number from a mix, this is a combination question since the key word SELECT is mentioned.
Now, how do we go about it? To select a partial number from a mix , we use the combination formula as stated.
Mathematically, say we are selecting a number r from a total of numbers n, the number of ways we can do this is nCr = n!/(n-r)!r!
In this case however, we are simply selecting 4 out of 12
Our combinational equation thus becomes 12C4 = 12!/(12-4)!4! = 12!/8!4! = 495 ways
Answer:
ab=16
ca=4
4a=32
Step-by-step explanation:
a*b=8*2=16
c*a=1/2*8=4
4*a=4*8=32
hope it helped xx
Batch size = 280 purifiers
Defectives = 12 purifiers
Then,
P(defective) = defectives/batch size = 12/280 =3/70
As a percentage:
P(defective) = (3/70)*100 = 4.29%
Answer:
°
Step-by-step explanation:
The given figure is a quadrilateral or a figure with (4) sides. The sum of angles in a quadrilateral is (360) degrees. One can apply this here by stating the following:
Simplify,
Inverse operations,
Answer:
First is congruent
Last two are not congruent