sarahlamar382 sarahlamar382

03-12-2014
Mathematics

contestada

3x+4y=2 4x-4y=12 elimination

Respuesta :

Wenqian Wenqian

03-12-2014

3x+4y=2
+ 4x-4y=12 add them since 4y and -4y can cancel out
7x=14 divide each side by 7
x=2

3x+4y=2 x=2
3(2)+4y=2 substitute
6+4y=2
-6 -6
4y=-4 divide each side by 4
y=-1

Answer Link

03-12-2014

3x+4y=2
4x-4y=12
Add both
7x=14
X=2
Substitute value of x in first equation
Y=-1

Answer Link

Otras preguntas

How do you right a number in its prime factorization?

When someone of irish ancestry who doesn't typically identify as irish in everyday life puts on a green hat, drinks green beer, and wears a "kiss me, i'm irish"

Which amendments were specifically written to increase participation of minorities in us government?

What do you do if you dont find the median number?

In which of these does comedy have its roots

Which energy conversion occurs during the process of photosynthesis?

Which sentence is most clearly about the relationship between a poem's setting and its mood? A. Simile is a comparison that uses the words "like," "as," or "

At his comic book store, Korey’s Comics, Korey sells approximately $3,250 in comic books each month. But as a comic book dealer, Korey only pays $1,285 for the

which city was the center of colonial resistance before the american revolution

An organism that breaks down dead organisms and wastes