Formulas2

Question 1

Nth term
3,5,7,9,11,13

Answer 1

3,5,7,9,11,13
+2 is the pattern so
2n and difference between 3 and 2 is 1 so the pattern is 2n+1

Question 2

Is 107 in the sequence of 1,4,7,10,13

Answer 2

Firstly find the nth term
3n -2
Then you do
107= 3n-2
+2. +2
109= 3n
/3. /3
109/3=36.333
36.3333= n
However 107 simplifies down is a decimal so it is not in the sequence

Question 3

Further algebra

15 = 9+7n

Answer 3

15 = 9+7n
-9. -9
6 = 7n
/7. /7
6/7 = n

Question 5

How to work out the number of sides from just one sides angle
135

Answer 5

Exterior angles = 180 - 135
Exterior angles = 360/45 =8
8 is the number of sides