Find The Arithmetic Mean Of -23 And 7

Find the arithmetic mean of -23 and 7

 

Answer:

The A.M is 5

Step-by-step explanation:

an=a1+(n-1)d

an=7

a1=3

n=3

d=?

an=a1+(n-1)d

7=3+(3-1)d

7=2d+3

2d=4

d=2

find a2(mean)

a2=3+(2−1)(2)

a2=3+(1)(2)

a2=3+2

a2=5

#JuneChallenge


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