Question

if the mean of the observations x,2x +1,2x+5,2x+9 is 30.what is the mean of the last 2 observation

pls help me it is very urgent​

Answer 1

Answer:

The mean for 2x+5 and 2x+9

Step-by-step explanation:

Mean= Sum of Observations/No.of Observations  

Mean= 2x+5+2x+9/2

Mean= 4x+14/2

Mean= 4x+7

Hope it helps you!