Answer: 89
Step-by-step explanation:
check on google
Answer:the answer is D
Step-by-step explanation:
For sake of convenience, reverse the series, then it would be:
21,19,17.....7
a=21, d = -2,
s(4) = 4/2 (21+15)
s(4)=2(36)
s(4) = 72
Answer:
Step-by-step explanation:
The answer is 12 miles, if every inch is 3 miles on the map then 3x4=12.
