Answer:
d = 4
Step-by-step explanation:
- 6 - d = 6 - 4d ( add 4d to both sides )
- 6 + 3d = 6 ( add 6 to both sides )
3d = 12 ( divide both sides by 3 )
d = 4
1st is 19
2nd is 23
3rd is 27
4th is 31
5th is 35
6th is 39
7th is 43
8th is 47
9th is 51
10th is 55
This is because you are adding 4 each time, the rule of the sequence is 4n+15
Answer: the answer is D
Step-by-step explanation:
The greatest common factor is 5.
