Answer:
Arithmetic Sequence
n= 5
a1= 4
a5=40
d=?
Solution: (Follow the formula above)
an=a1+(n-1)d
a5=4+(5-1)d
a5=4+(4)d
a5=4+4d
40-4=4d
36=4d
4d/4=36/4 (you need to copy the number to cancel 4 in 4d and make a fraction)
d=9
The answer is d=9
4+9=13
13+9=22
22+9=31
31+9=40
Step-by-step explanation:
