Insert the indicated number of arithmetic means given the first and last terms, respectively
1) Insert 3 arithmetic means between 7 and 39
2) Insert 5 arithmetic means between 5 and 17
3) Insert 4 arithmetic means between 11 and 31
4) Insert 1 arithmetic mean between -5 and -19.
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Answer:
1.15,23,31
2.7,9,11,13,15
3.15,19,23,27
4.14
Step-by-step explanation:
Answer:
1.) 7 15 23 31 39
Step-by-step explanation:
formula: an=a1+(n-1)d
sol:
39=7+(5-1)d
39=7+4d
39-7=4d
32=4d
4
8=d