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1 answer:
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Answer:
D
Step-by-step explanation:
There are 9 letters, which contains 2Qs, 3Ls and 4Bs.
If the 9 letters are distinct, the number of permutations they have will be 9!.
! is the factorial sign.
9! = 9*8*7*6*5*4*3*2*1
HOWEVER, we have some identical elements, so we need to get rid of the permutations of the same letters.
Thus we have:
The answer is D
Answer:
The solution to the given system of equations is
(,
)
Step-by-step explanation:
Given system of equation are
To solve equation by using elimination method
Now subtracting equations (1) and (2)
_________________
5x=-16
Substitute in equation (1)
Therefore the solution is
(,
)