Find an equation for the nth term of the arithmetic sequence.
2 answers:
Answer:
Option B.
Step-by-step explanation:
The given arithmetic sequence is
We need to find the nth term of the given arithmetic sequence.
Here,
First term :
Common difference :
The nth term of an arithmetic sequence is
where, a is first term and d is common difference.
Substitute a=-13 and d=5 in the above formula.
Therefore, the correct option is B.
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Answer:
When Sum of square of two Sides is equal to square of third side of triangle.
Step-by-step explanation:
Given:
Three side length of triangle are given we need find the which value to substitute for a, b, c in Pythagoras theorem.
First we will find the squares of all length, then we will check which two square of side are equal to square of third side as per Pythagoras theorem.
Hence the two side would according be a and b and third side will become c.
For example if length of triangle is given as 6 cm, 8 cm and 10 cm.
We will first take square of all
Now we can see that
Now by Pythagoras theorem.
Hence we can say a = 6 cm, b = 8 cm, c= 10 cm