3 + f = 14 and 2/7
1 answer:
We transform the number 3 into a fraction 21/7 and then we substract it from the fraction on the right to get the value of thw variable f
-the answer is B f= 11 and 2/7
- you could also just put the solutions from A,B,C and D into F and comapre left side to the right side (when they're equal you have the right f)
-the answer is B f= 11 and 2/7
- you could also just put the solutions from A,B,C and D into F and comapre left side to the right side (when they're equal you have the right f)
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Answer: The required number of ways is 25401600.
Step-by-step explanation: Given that seven men and seven women line up at a checkout counter in a store.
We are to find the number of ways in which they can line up, if the first person in line is a man , and the people in line alternate man, woman, man, woman and so on.
Since the first person is a man, so
for first position, we have 7 options.
There are alternate man and women in the line, so the second person must be a women.
That is, we have 7 options for the second position.
Similarly, for 3rd and 4th positions, we have 6 options for each, and so on.
Therefore, the number of ways in which the 14 persons can line up is
Thus, the required number of ways is 25401600.