12^-6/12^7
When dividing the only thing you do is subtract the exponents from each other.
-6-7
In this case, you have to subtract a number from a negative. -6-7 would actually be -6+-7.
-6+-7= -13
12^-13 is the final answer
The sum of the unknown angle and 33 degrees are supplementary. The measure of x is 147 degrees
<h3>Supplementary angles</h3>
The sum of the unknown angle and 33 degrees are supplementary to have:
x + 33 = 180
Subtract 33 from both sides
x + 33 - 33 = 180 - 33
x = 180 - 33
x = 147degrees
Hence the measure of x is 147 degrees
Learn more on supplementary angles here: brainly.com/question/12919120
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Answer:

Step-by-step explanation:
Method 1:
Arithmetic sequence is in the form

d is the common difference, can be found by:

Subtituting the
and 
You get:

Method 2 (Mathematical induction):
Assume it is in form 
Base step: 
Inducive hypophesis: 
GIven: 

Proved by mathematical induction
