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

You are asked to solve for y in the equation –3 = 5y – 2x, given that x = –4. What is the first step you would take? A. Substitute –4 for x in the equation. B

For her fitness class, Ana bought a stability ball that has a volume of 4,500π cubic inches. Fredrick is taking the same fitness class and needs a stability bal

Find two consecutive whole numbers that square 52 lies between

Hyundai achieved the status of being the 6th largest automobile producer in the world by 2005 and a major competitor to gm, ford, and toyota. hmc's success has

Why is it important to learn introduce in spanish?

What is the magnitude of the acceleration of an electron at a point where the electric field has magnitude 6377 n/c and is directed due north?

What is the length of a living room that is 2 time the width and the total area is 8 square meters

Is 1/3 greater than 0.333

In Maya Angelou’s poem “Caged Bird,” what does the cage represent?

Explain why generators are an important use of electromagnets.