Math, asked by deepasinha, 11 months ago

(c) Marks obtained by 40 students is given below, where a and b are two missing data.
If the mean of the distribution is 7.2. find a and b.
Number of students :
Marks 5 6 7 8 9
Number 6 a 16 13 b

Answers

Answered by VishuPoonia

1

Step-by-step explanation:

a is 1 and b. is 4 this is the right answer

Previous Question

Next Question

Similar questions

Biology, 5 months ago

Describe the functionof gastric and pancreatic gland.

History, 5 months ago

What aspects of America’s role in World War I were African Americans bitter about fighting for?

Political Science, 5 months ago

Which of these statements about the Non- aligned Movement is incorrect ?

Physics, 11 months ago

what'is transformer...

Math, 11 months ago

An object with a mass of 0.5 kilogram starts from rest and achieves a maximum speed of 20 meters per second in 0.01 second. What average unbalanced force accelerates this object?

Math, 1 year ago

ln a camp with 45 athletes there is enough food to last for 25 days After 5 days 15 more athletes join the camp For how long will the food last now Give step by step solution for it...

Physics, 1 year ago

What is the distance travelled by sound in air when a tuning fork of frequency 256Hz. Completes 25 vibrations? The speed of sound in air is 343 m/s.

Social Sciences, 1 year ago

which industry is often referred to as the backbone of modern industry and why ??