Answer:
c.
That's because numbers like 2,31, 50 and so on are integers while 2.4, √66 ND so on are not
If we solve the left side of the given equation,
1/a + 1/b = 1/c
we get an answer of,
b+a / ab = 1/c
Since ab = c, we can conclude that b + a is 1. The average of these two numbers is equal to there sum divided by 2. The answer is therefore equal to 0.5.
The correct answer is C i believe
each sister gets 21 dollars, so there are three sisters there fore 21*3 equals 63
Answer:

Step-by-step explanation:
The first partial sum is:

The second partial sum is:

Which represents the option A.