mariamorales816 mariamorales816

24-01-2017
Mathematics

Answered

Three of four numbers have a sum of 22. If the average of the four numbers is 8, what is the fourth number?

Verified Answer :

LammettHash LammettHash

24-01-2017

Let \(x_1,\ldots,x_4\) be the four numbers. Their average is 8, so

\(\dfrac{x_1+x_2+x_3+x_4}4=8\)

You know that three of the numbers have a sum of 22, so

\(\dfrac{22+x_4}4=8\)

Solve for \(x_4\):

\(\dfrac{22+x_4}4=8\implies22+x_4=32\implies x_4=10\)

Answer Link

Related Questions

Why did Colonel Arthur Brooke and his men retreat from North Point a They were called upon to act as reinforcements in Vice Admiral Cochranes battle at Fort McH

You buy a 11000 scale model of the Statue of Liberty during a trip to New York City The height of the model is 93 centimeters Find the actual height x in meters

To reduce climate damage scientists hope to generate nuclear energy through A fission B fossil fuels C fusion D uranium

2947 in expanded algorithm

Barometric pressure has been dropping all day What weather conditions will most likely occur

What is your opinion on Global Warming

In America democracywhy is the principle of checks and balances important

Liliana decides to crop a square photo 2 inches on each side to fit it into a frame The area of the original photo was 121 square inches In the equation x 22 1

name an analog quantity other than temperature and sound

Web Analytics