If 7 is the mean of 5,3,0.5,4.5,a,8.5,9.5 then what is the value of 'a'
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Answer:
answer is 18
Step-by-step explanation:
5+3+0.5+4.5+a+8.5+9.5/7 = 7
5+3+5+a+18/7 = 7
13+18+a/7=7
31+a/7= 7
31+a = 7*7
31+a = 49
a = 49-31
a = 18
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