1.

The numbers 4 and 9 have frequencies x and(x - 1) respectively. If their arithmetic mean is 6,then x is equal to :(1) 2 (2) 3 (3) 4 (4) 4​

Answer»

ANSWER is 2becaus

Step-by-step explanation:

4(X-1)=9(x-1)

4x-4=9x-9

-5x= -10

so x =2



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