Seudónimo Seudónimo

22-01-2016
Mathematics

contestada

Solve the system of equations using the substitution method.

Solve the system of equations using the substitution method class=

Respuesta :

Аноним Аноним

22-01-2016

Multiply 3x +y =23 by -4

x+4y=4
-12x+(-4y)=-92

Add together

-11x = -88

x = 8

Plug x in to find y.

8 + 4y = 4

Subtract 8 from each sides

4y = -4

Divide by 4

y = -1

So the answer is x =8, y= -1

I hope that helps!

Answer Link

Otras preguntas

The federal government continues to be the largest provider of human services in the United States. Among the major human services provided by the government ar

In the reaction MgCl2 + 2KOH Mg(OH)2+ 2KCI, if 3 moles MgCh are added to 4 moles KOH, what determines how much Mg(OH)2 is made?

A man has 30 coins, which are all dimes or nickels. Their combined value is $2.10. How many coins of each kind does he have? Let x = the number of nickels. Let

Following World War 1, how did Wilson propose to have World Peace?A) Through the Fourteen Points.B) The League of Nations.C) Treaty of Versailles

Why will you NOT get sick from a vaccine?

At a local fair, a roller coaster takes 19.63 seconds to complete one ride. If six people can ride at the same time, use estimation to determine how many people

Find the next two terms in this sequence 10, 40, 160, __, __

The equation of a circle is x2 + y2 + Cx + Dy + E = 0. If the radius of the circle is decreased without changing the coordinates of the center point, how are th

1. Marta se levanta y ___ se viste. después antes durante 2. Alfonso ___ en el gimnasio. se duerme se ducha se acuesta 3. Carla ___ el pelo. se maquil

The map shows travel patterns in north Africa in 1400 CE. Which city was likely influenced the most by the Egyptian culture? A. Bilma B. Aoudaghost C. Si