Monday

December 22, 2014

December 22, 2014

Posted by **Mack** on Sunday, May 20, 2007 at 5:34pm.

The avera&e (aritmeticmean)of x and y is 5 and the avera&e of x, y, and z is 8. What is the value of z?

(a)19

(b)14

(c)13

(d)11

(e)3 I solved it by addin 8+5=13

So I chose (c)13. But it's wron& and the answer is (b)14. How did they arrive at that answer?????

You should solve it by two fives + z=24

why do i have to solve it this way?

5+5+z=24

10+z=24

-10 -10

z=14

**Answer this Question**

**Related Questions**

matrh - what is area

matrh - what are the equivalent fractions for 9/8

Calculus - Solve the following initial value problem explicitly: y'= ye^-x , y(0...

Calculus - Seperable Equations - Solve the separable differential equation (dy/...

Public finance - Please help me understand the problem provided below and ...

English - 1. He can not solve the math problem. 2. He cannot solve the math ...

math - Use any problem solving strategy to solve the following problem.The value...

Pre calculus - How do I solve this exponent problem? I understand the exponent ...

maths - Can any one help with the following please: Solve the initial-value ...

math - can someone please help me? I am stuck on a problem it deals with ...