Math, asked by taev, 1 year ago

find the mean of 30 numbers given mean of 10 of them is 12 and the mean of remaining 20 is 9

Answers

Answered by atulrajcool

2

(10×12+20×9)/30=(120+180)/30=10

atulrajcool: if you have any doubt follow me and message me and don't forget to mark my answers brainlist if you understand it well

taev: is this a formula or something

taev: if it is, please let me know

atulrajcool: i have only applied the basic formula

atulrajcool: sum of observation/number of observation

Previous Question

Next Question

Similar questions

Math, 7 months ago

Fill in the blanks ........... and............. are universal truth .

English, 7 months ago

the catch fish in the pond passive...

Computer Science, 7 months ago

The correct part of speech, is the following bold word "She passed the exam easily" af a)Preposition b) Nous 1) Adverb d.) Ad jestive...

Science, 1 year ago

hey guys.. give me the summary of the chapter " open window " from the book it so happend of class 8 it's urgent.

Math, 1 year ago

Cos2a/1-tana+sin3a/sina-cosa=1+sina.cosa...

Physics, 1 year ago

Hii everyone!! Plz solve Question No. 13 given in the attachment....

Math, 1 year ago

In a vallet there are 1, 0. 5, 0. 25 coins are there in the ratio of 13:11:7 and the total coins are 372 then find the total amount...

Science, 1 year ago

you have heard about campaign say no to plastic make a project report mentioning all the governmental and Non governmental organisations educate the general public on how to make wise use of plastic and develop inter environment friendly habits...