TesterPay23 TesterPay23

17-08-2017
Mathematics

contestada

Two numbers, 3 and a, have a geometric mean of 9. Find the value of a.

Respuesta :

freedFromDesire freedFromDesire

17-08-2017

The geometric mean of two numbers x and y is √(xy).

So, if the geometric mean of 3 and a is 9 =>

9 = √(3a)

=> 9^2 = 3a

=> a = 9^2 / 3

a = 81 / 3

a = 27

Answer: the value of a is 27.

Answer Link

Otras preguntas

Do the ordered pairs below represent a relation, a function, both a relation and a function, or neither a relation nor a function? (-5,9) , (0,-1) , (7,-15) , (

Question 4 Help me please!!!!!!!!!!!!!!!!!

Topher has of a whole pizza. How many 's of a whole pizza are there in of a whole pizza?

In criminal court cases, what portion of the jurors is needed to reach a guilty verdict?

On August 2, ABC Co. receives a $7,900, 90-day, 10.5% note from its customer who is past due on what he owes. This note is replaces the customer's $7,900 accoun

Help!! Thank you! :)

part a how do eckels actions while he is in the past develope the plot of the passage

what is the answer to this equation? *both* (if you get it right i'll give you a 5 star ranking.)

What does the value of collateral or down payment affect? Check all that apply. the amount borrowed the interest rate the lender’s perceived risk the repayment

In how many ways can eight books be arranged on a shelf if the three math books must be placed next to each other?