Answer:
The area
Step-by-step explanation:
Given

Required
What does 49 represent?
In the context of the question, 49 represents the area
We have:
--- side length
So:



Answer:
The Population Density is
.
Step-by-step explanation:
Given,
Total number of People = 900,000
Total Land Area = 1800 sq. mi.
Solution,
For calculating the population density, we have to divide the total number of people by the area of the land.
This can be framed in equation form'

Now putting the given values, we get;

Hence The Population Density is
.
Answer:
1) 128
2) 32
Step-by-step explanation:
1) 8C1×4C1×4C1 = 128
2) 5C1 + 5C2 + 5C3 + 5C4 + 5C5
= 32
In order to isolate any term from an equation we need to clear out any different variable or numbers different from the one we want

in this case I is being multiplied by R, so we need to do the opposite which is divide in order to eliminate

But since this is an equality we must do it on both sides so de equation does not get altered

Then we simplify the equation
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