Math, asked by jeshsa6nthigraveeks, 1 year ago

The average of x1 x2 x3 and x4 is 16. Half the sum of x2 x3 x4 is 23. What is the value of x1?

Answers

Answered by mysticd
22
Hi ,

_____________________________

Average
= ( sum of the observations ) /

(number of observations )

_____________________________

According to the question ,

Observations are x1 , x2 , x3 , x4

Average = 16

( x1 + x2 + x3 + x4 )/ 4 = 16

x 1 + x2 + x3 + x4 = 64 --------( 1 )

Half the sum of x2 , x 3 , x4 = 23

1/2( x2 + x3 + x4 ) = 23

x2 + x3 + x4 = 46 --------( 2 )

Subtract ( 2 ) from ( 1 )

x1 = 18

I hope this helps you.

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