To make an equation an inverse, you would raise it to the -1 power. For example:
3^-1 = 1/3
1/3^-1=3
:)
The Recursive formula for an Arithmetic Sequence is a1 = -3, an = an-1 + 6.
<h3>What is Arithmetic sequence ?</h3>
An arithmetic sequence is a sequence where each term increases by adding/subtracting some constant k.
Given:
an = -3 + 6(n – 1)
a1= -3
a2= 3
a3 = 9
Here the common difference is 6 and first term is -3
Hence, the recursive formula is a1 = -3, an = an-1 + 6.
Learn more about this concept here:
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Answer:
4 per week, 4weeks per month(8weeks)
4*8=32
The answer is 9.
To calculate this, we will use Galileo's square cube law, used to describe the change of the area or the volume of the shape, when their dimensions increase or decrease. The formula used for change of the area is

A₂ - the area after the change,
A₁ - the area before the change,
l₂ - the dimension after the change,
l₁ - the dimension before the change.
It is given:
l₁ = 1 cm
l₂ = 3 cm
Let's use this formula for the mentioned triangle:

Therefore, the area of the triangle was multiplied by 9.