Mathematics, 13.12.2019 17:31, tytybruce2
If the average(arithmetic mean) of 5 and r is 7 and the average of 3 and s is 3 , what is the average of r and s?
a) 3
b) 5
c) 6
d) 9
Answers: 1
= 7 ( multiply both sides by 2 )
= 3 ( multiply both sides by 2 )
= 
= 6 → C
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If the average(arithmetic mean) of 5 and r is 7 and the average of 3 and s is 3 , what is the averag...
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