avatran1011 avatran1011

25-08-2017
Mathematics

contestada

If the average (arithmetic mean) of 2, 7, and x is 12, what is the value of x?

Respuesta :

Аноним Аноним

31-08-2017

The three numbers are 2, 7 and x.

Ther sum is
2 + 7 + x = 9 + x

Because the arithmetic mean is 12, therefore
(9 + x)/3 = 12
9 + x = 12*3 = 36
x = 36 - 9 = 27

Answer: x = 27

Answer Link

Otras preguntas

How was Christianity spread during the Middle Ages? -Schools included teachings of the Catholic Church as part of the curriculum. -Monks traveled through Europe

You are planning on using circles to compare the populations of California 37,691,000, Texas 25,675,000, and New York 19,465,000. If the circle for New York wil

You deposit $150 in a savings account that earns simple interest at a rate of 5.5% per year. How much interest will you have earned after 4 years? Please show w

What event would most likely cause an increase in sales A. Decrease in price B. Increase in supply C. Decrease in product quality D. Increase in quantity produc

A mental framework that individuals use to understand the world.

Indirect Proof help! WILL MEDAL Given: Rectangle JKLM has an area of 36 square centimeters. Side is at least 4 centimeters long. Prove: KL ≤9 centimeter "Assum

At which point in the eukaryotic cell cycle can a DNA mutation occur?

it wrong i just did it

Select examples of public goods provided to everyone by the government A) protecting the country B)computer laptops C) mail delivery D)public schools

Chronological order should always be used when writing a literary analysis. True or False?