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:
Floating point(Decimal) is 0.1
Fraction is
<h3>This is because...</h3>
10^-1 is going to be 0.1 in this case. This is because 10^-1 is the same as , which is the same as , because anything times 1 remains the same.
is the same as 0.1
We get a 2-in-1 answer, which is perfect for this scenario!
Hence, the correct answers are and 0.1
Answer:
160
Step-by-step explanation:
The measure of an arc is always twice the degree of the corresponding angle inside the circle. For example, the measure of arc DC is just double the measure of angle DOC; angle DOC is 44 degrees, so arc DC must be 88 degrees.
Angle COB is 80 degrees, so arc CB is 160 degrees.
9514 1404 393
Answer:
x = (-3 ± i√31)/8
Step-by-step explanation:
There is nothing to solve. It can be simplified to ...
x = (-3 ± i√31)/8
x = (-3/8) +i(√31)/8 or (-3/8) -i(√31)/8
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Factoring -1 from under the radical puts i (the imaginary unit) in front of the radical. A factor of 2 can be removed everywhere.