12-12-2015
Mathematics

contestada

If x + y = 9, z + y = 12, and z + x = 11, what is the average (arithmetic mean) of x, y and z?

Respuesta :

12-12-2015

[tex]x+y=9 \\ z + y = 12 \\ z + x = 11 \\ x+y+ z + y+ z + x=9+12+11 \\ 2x+2y+ 2z=32 \\ x+y+ z=16 [/tex]

Answer Link

Otras preguntas

a student carefully measures the melting point of a solid material. she measures the range to be 78.3 - 79.1 oc. assuming she has done the measurement correctly

berry co. purchases a patent on january 1, 2021, for $40,000 and the patent has an expected useful life of five years with no residual value. assuming berry co.

which technology runs at 1 gbps at distances up to 70 km and has largely replaced frame relay and atm?

5. The corresponding sides of the similar shapes have same - In the figure given below, what is the value of x? (RED) 2 cm 3 cm 3 cm 2 cm 4 cm x cm (GR 4 cm

suppose a person who is homozygous for no ear lobes reproduces with a person who is homozygous for ear lobes. what percentage of their offspring will have the e

A car accelerates from rest at a rate of 25m/s2. How far did it travel by the time it reaches 120m/s? Answer = 288 m Help with the work??

According to the Net Present Value (NPV) rule, managers choose to invest if? a. The NPV of the project is less than zero b.The NPV of the project is greater tha

The graph represents a quadratic function. Write an equation of the function in standard form. PLEASE HELP ME

A Expresso XPTO pussuin3 filhares, e uma matriz, cadavfilhar com 60 HOSTS e a matriz possuindo 35 HOSTS, sabendo que a mesma utiliza o endereço 10.10.10.0 com a

A number cube with faces labeled from 1 to 6 will be rolled once. The number rolled will be recorded as the outcome. Give the sample space describing all possib