what is the missing value in the following arithmetic sequence?\n|n|1|2|3|4|5|\n|an|2|3.8|5.6||9.2|\n7.1\n7.2…
what is the missing value in the following arithmetic sequence?\n|n|1|2|3|4|5|\n|an|2|3.8|5.6||9.2|\n7.1\n7.2\n7.4\n7.5
Answer
Answer:
C. 7.4
Explanation:
Step1: Find the common - difference
$d=a_2 - a_1=3.8 - 2 = 1.8$
Step2: Calculate the fourth - term
$a_4=a_3 + d$ $a_4=5.6+1.8 = 7.4$