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

What is the best estimate for 86.68

Miss Kincaid is 65 inches of ribbon is your post to instantly 5 inches of ribbon how many students get a 5 inch piece of ribbon

Please help 15 POINTS!! problem below

She found that the area of the garden will be 127 1/2 square feet by using the equation Area=bh. I'd the height, h, of the parallelogram-shaped garden is 8 1/2

Part a a box is being pulled to the right over a rough surface. t > fk , so the box is speeding up. suddenly the rope breaks. what happens? the box a box is

Which event played the greatest role in establishing the supremacy of the national government over the states? A) the American Revolution B) Manifest Destiny

Can anyone help me please

Select the sentence containing a restrictive clause. Remember, commas are used with nonrestrictive clauses only. The water is cold, but the sand is warm. The c

Yo soy Aurelio y 1. ________ gusta aprender en la clase de computadoras. Tú eres Marcelo y a ti 2. ________ gusta escribir. Ella es Susan y a ella 3. ________ l

1. Most familiar life forms live in regions of biomes that humans inhabit. (1 point) True False 2. Biodiversity is the variety of life forms that exist or exist