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

What was the general belief of Americans concerning the Cold War during the1950s?A. Americans wanted to spread the war to more nations.B. Americans were afraid

10 point ..........help a homie out

I need help fast. Number 18 and 19

Which of the following is a way that the body determines how much of a certain chemical, protein, enzyme, or response is needed to maintain homeostasis? A.

whats the mode, median, mean and range of 24, 31, 12, 38, 12, 15

Imagine you are giving a speech about the golden age of television. Which visual aid would best engage the audience's emotions? O A, A photo of the cast from a

HELP ASAP Which was the purpose of groups such as the WPA and the CCC? a. to raise money to elect Democrats to Congress b. to reform the practices of bus

I need help on this question mind helping me out?

this is the last question who ever gets to it first ill mark brainlest

each lap around a park is 0.58 mile .jessica walked 3.25 laps around the park. how many miles did jessica walk around the park