The fifth term of an arithmetic sequence is 23 and the 12th term is 72 Determine the first three terms of the sequence ​

Step-by-step explanation:

a₁₂ = a₅ + (12-5)d

72 = 23 + 7d

d = 7

a₃ = a₅ + (3-5)d = 23 - 2⋅7 = 9

a₂ = a₃ - d = 9-7 = 2

a₁ = a₂ - d = 2 -7 = -5

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )

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step-by-step explanation:

i hope this : )