Analyze and solve the following terms of the arithmetic sequence if the 20th term is 50 and the 40th term is 10. Solve the common difference.
Home
/
Analyze and solve the following terms of the arithmetic sequence if the 20th term is 50 and the 40th term is 10. Solve the
Answer:-2 is the common difference
Step-by-step explanation:
a+19d=50
a+39d=10
subtract the equations
39d-19d=10-50
20d=-40
d=-2