Starfish23 Starfish23

17-01-2017
Mathematics

contestada

Solve using linear combination

x-y=-7
x+y=7

A. (-7,0)
B. (7,0)
C. (0,7)
D. (0,-7)

Respuesta :

apologiabiology apologiabiology

17-01-2017

add them equationas and y's cancel

x-y=-7
x+y=7 +
2x+0y=0

2x=0
x=0

so

0+y=7
y=7

(x,y)
x=0, y=7
(0,7)

C

Answer Link

Otras preguntas

A child with a body mass index (bmi) equal to or greater than the 85th percentile, but less than the 95th percentile, is:

original in a sentence

Help me please it would be great full

The point a is located 6 units to the right of the y-axis and 7 units below the x-axis. what are the coordinates of point a?

What’s the correct answer

Which type of context clue can be used to determine the meaning of the bolded word in the following sentence? Unlike his arrogant brother, Marcus did not tell

I need help please ASAP

Explain how social concerns will be a part of ap biology

The phonecians development of culture

which tab is used to insert a hyperlink onto a slide