Answer:
subscripts identify different instances of objects that have a similar meaning or definition
Step-by-step explanation:
You apparently are interested in the meaning of the subscript N in the explicit formula ...
Here, it is used to identify different terms of a sequence. When a value is substituted for N, it replaces all instances of N. Using your example, the first three values of 
are ...
So, if you're asked to find the 20th term of the sequence, you put 20 where N is, then do the arithmetic.
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Subscripts are also used to identify elements of a matrix or coordinates in multiple dimensions. For this purpose, there may be 2 (or more) subscripts, whose order has meaning. The subscripts 24, for example, in 
refer to row 2, column 4 of a matrix named A. That is, the subscripts are in row, column order.
In short, subscripts are used to identify different instances of similar objects.
Answer: 100 blue Atlantic lobsters
Step-by-step explanation:
Approximately 0.02 Atlantic lobsters are born blue.
0.02 in percentages is 2%.
Out of 5,000 Atlantic lobsters therefore, 2% will be born blue.
The number of blue lobsters expected is:
= 5,000 * 2%
= 100 blue Atlantic lobsters
559 songs are other songs
A² - 225 = (a-15)(a+15)
..................................................................
Plug in the dimensions to the formula given using a handy dandy calculator for both problems.
1. The diameter of the bottom of the cone is 4 so the radius (half that) is 2. Volume = 1/3 * pi * (2)² * 6
= 1/3 * pi * 4 * 6
= 1/3 * pi * 24
= 8 * pi
≈ 25.1327 cm³
2. They give you all you need, the radius.
Volume = 4/3 * pi * (6)³
= 4/3 * pi * 216
= 288 * pi
≈ 904.7787 in³
