04-04-2014
Mathematics

contestada

If 2x+z=2y and 2x+2y+z=20 what is the value of y?

Respuesta :

Аноним Аноним

05-04-2014

[tex]2x+z=2y\to2x=2y-z\\\\substitute\ to\ 2x+2y+z=20:\\\\(2y-z)+2y+z=20\\2y-z+2y+z=20\\4y=20\ \ \ \ /:4\\y=5\to answer[/tex]

Answer Link

Otras preguntas

Shawns rectangular mobile home is 7.2 meter wide and 19.5 meters long. what is its area

Resolution is a microscopes power to increase an object's apparent size true o false

in which order (first to last) were the following countries invaded by Britain?

how could you ensure that all the spectroscopes created the same calibration line and equation?

Which descriptions are correctly matched with the appropriate nation?choose all answers that are correct.Italy- monopolized trade Asia and became wealthy as a r

Can anyone help me with these please

Find the slope for 2x-6y=24

A boy band has released two albums. Their first album sold 5.9×10^5 copies. Their second album sold 1.3×10^6 copies. How many total copies has this boy band sol

What is the weight for 5 kilograms

The sum of two integers is eight. give two examples of what this number could be