HELP this is important!
1 answer:
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The sum of the angles of each n-sided figure is found in the following equation :
The question's figure is 5-sindes figure
so the sum the angles equal :
So we have :
Subtract the sides of the equation minus 479
And we're done.
Thanks for watching buddy good luck.
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Given:
The sequence is 25, 20, 15, 10, 5.
To find:
The ninth term of the given sequence.
Solution:
We have,
25, 20, 15, 10, 5
It is an AP because the difference between two consecutive terms are same.
Here,
First term (a) = 25
Common difference (d) = 20-25
= -5
The nth terms of an AP is
Where, a is the first term and d is the common difference.
Putting a=25, n=9 and d=-5 to get the 9th term.
Therefore, the ninth term of the given sequence is -15.