A shelf contains n separate compartments. There are r indistinguishable marbles.
1 answer:
Answer:
ways
Step-by-step explanation:
Given that a shelf contains n separate compartments. There are r indistinguishable marbles
The marbles are identical so they can be placed in any order.
Let us consider the places available for placing these r marbles
No of compartments available =n
Marbles to be placed = r
Since marbles are identical and order does not matter
number of ways the r marbles can be placed in the n compartments
= nCr
=
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Answer:
x= 13
Step-by-step explanation:
−4/9(18x − 36) = −88
we need to solve the equation for x
First we remove the fraction -4/9
Multiply by -9/4 on both sides
18x -36 = 198
Now add 36 on both sides
18x = 234
Divide both sides by 18
x = 13