samrawit samrawit

13-01-2015
Mathematics

contestada

write and solve a revised system
-5x-2y=6
3x+6y=6

Respuesta :

13-01-2015

[tex] \left \{ {{-5x-2y=6\ \ | *3} \atop {3x+6y=6}} \right. \\\\ \left \{ {{-15x-6y=18} \atop {3x+6y=6}} \right. \\+----\\addition\\\\ -12x=24 \ \ \ \ | divide\ by\ -12\\\\ x=-2\\\\ 2y=-5x-6\ \ \ | divide\ by\ 2\\\\ y=\frac{-5x-6}{2}\\\\ y=\frac{-5*(-2)-6}{2}=\frac{4}{2}=2[/tex]

Answer Link

Otras preguntas

Astronomers using a 2.0-m-diameter telescope observe a distant supernova—an exploding star. The telescope's detector records 9.1 × 10−11 J of light energy durin

Put these in order from superficial to deep? a: Dura mater b: Pia mater c: Arachnoid mater A) b, a, c B) c, b, a C) a, b, c D) a, c, b E) b, c, a

Linearising a nonlinear functionTo obtain a linear model of a nonlinear system, we assume the variables deviate slightly from an operating condition.Taylor Seri

As a circular loop of wire expands from an initial radius of 0.30 m to 1.00 m in a constant magnetic field, how does the induced electromotive force (emf) chang

A piece of copper alloy (C17200) originally 305mm long is pulled in tension with a stress of 276 MPa. If the deformation is entirely elastic and the elastic mod

Inacio is an 80-year-old man who has been given three months to live. He has requested to be left alone. When asked, he says that he is not feeling much physica

ts inner radius is 50.The width of the ring is 4yd .

Points A and B are separated by 300 feet of 8- inch SCH 40 PVC pipe. 750 gpm water flows from point A to B. Point B is 60 ft higher than point A. What pressure

X12 Я Name: speed = d/t el u EN Calculating Speed, Distance, and Time Practice distance=sxt Date: Block: time = d/s 1. A boy cycles for 17 hrs at a speed of 26

What is the concentration of a solution made by mixing 42 grams of cobalt with 185 grams of distilled water? (A) 26. 75 (B) 0. 185 grams (C) 302 grams (D) 18. 5