fisherjake510 fisherjake510

01-08-2017
Mathematics

contestada

Solve the system using elimination. x + 2y = –6 3x + 8y = –20

Respuesta :

texaschic101 texaschic101

01-08-2017

x + 2y = -6....multiply by -3
3x + 8y = -20
---------------
-3x - 6y = 18 (result of multiplying by -3)
3x + 8y = -20
--------------add
2y = -2
y = -2/2
y = -1 <===

x + 2y = -6
x + 2(-1) = -6
x - 2 = -6
x = -6 + 2
x = -4 <==

solution is (-4,-1)

Answer Link

Otras preguntas

What is the forming adverb of courage

PLS HELP I BEG YOUU!!!

Simplify 3(-6+4) please

A spring stretches 2 cm when a 10 N weight hangs on it. How far will it stretch with a weight of 20 N ?

In 1848, John Marshall discovered a gold nugget in a ditch while building a sawmill on John Sutter's land near Sacramento San Diego Los Angeles O San Francisco

please help Ik 14 is right I need help ASAP

CRISSY IS BUILDING A RECTANGULAR PRISM WITH A VOLUME OF 360 CUBIC UNITS. THE HEIGHT OF THE PRISM IS IO UNITS. CHRISSY CLAIMS THAT THE BASE OF THE PRISM MUST BE

Condense (cos92°)(cos133°)-(sin92°)(sin133°) into a singular trigonometric function expression, then find the exact value.

Is 60% greater than 0.345

G A E H B F How many line segments are shown? CO