josuealejandro13441 josuealejandro13441

29-04-2024
Mathematics

Answered

The mean of 5 observations is 60, the mean of 10 observations is 30 and the mean of 15 observations is 20. The mean of all the 30 observations is
(a) 20
(b) 25
(c) 30
(d) 40

Answer :

Other Questions

What are the total electron pairs in AsH3

Need help what are the classifications of each system

What is 50% of 20 in a fraction?

What is the solution of 7x-6y=-16 8x-6y=-20

All citizens in ancient Athens took part in government by voting in the ?

In one week, the number of bowls a potter made was 6 times the number of plates. He made 90 bowls durig the week. Write an equation that could be used to find t

A total of 512 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student tickets sold was three times t

Which of the following describes the Napoleonic Code? a. Oath of allegiance to Napoleon b. Control over the voters c. Laws put into effect by Napoleon d. Fighte

What is 6-3 2/5. Please explain your thinking.

Georgia Democrats typically did not like fellow Southerners who became Republicans after the Civil War and supported Reconstruction of the South. What name did