Respuesta :
Answer:
1.2
Step-by-step explanation:
9.2 + 8d = 73.2
d = 8
then first term is 9.2 - d = 1.2
The first term of an arithmetic sequence is 1.2 with a common difference of 8.
What is a sequence?
It is defined as the systematic way of representing the data that follows a certain rule of arithmetic.
We have:
Tenth term of an arithmetic sequence = 73.2 or
a+(10-1)d = 73.2 ....(1)
Second term of an arithmetic sequence = 9.2 or
a+(2-1)d = 9.2 .....(2)
Where a is the first term and d is a common difference.
Solving equations (1) and (2)
From the equation (2) put the value of d in the equation (1), we get:
a+9(9.2-a) = 73.2
a+82.8 - 9a = 73.2
-8a = -9.6
a = 1.2
Thus, the first term of an arithmetic sequence is 1.2 with a common difference 8.
Learn more about the sequence here:
brainly.com/question/21961097
