18-11-2014
Mathematics

contestada

Solve the system if equations by substitution

Y=3x-13
3x+2y=19

Respuesta :

18-11-2014

[tex] \left \{ {{y=3x-13} \atop {3x+2y=19}} \right. \\\\Substitution\\\\ 3x+2(3x-13)=19\\\\ 3x+6x-26=19\\\\ 9x-26=19\ \ \ |add\ 26\\\\ 9x=45\ \ \ | divide\ by\ 9\\\\ x=5\\y=3x-13=3*5-13=15-13=2\\\\\\ x=5\\y=2[/tex]

Answer Link

Otras preguntas

The cat jumped into my lap, and I it’s back

1.1 Discuss importance of the following characteristics of living organisms. i) Growth ii) Reproduction iii) Excretion

Reflect on the assessment by answering these questions: What surprised you? How did this activity help you better understand the contradictions present during t

What is the image point of (-2,5) after the transformation T4,4° ry-axis?

How many gallons of a 80% antifreeze solution must be mixed with 90 gallons of 10% antifreeze to get a mixture that is 70% St antifreeze? Use the six-step metho

THE RUGMAKER OF MAZAR-E-SHARIF Why do you think Najaf Mazari places a higher value on actions than on thought and speech?

From Chapter 4.9, find the exact solution to f^' (x)=-4 sin⁡(x)-6 cos⁡(x)+4 if f(0)=12 this means to find the value of C when you integrate given the condition

What's different between do and does

People who try to steal other's achievement will be always defeated justify the statement in lite of the story The Midnight visitor.

Tickets for a raffle cost $ 17. There were 641 tickets sold. One ticket will be randomly selected as the winner, and that person wins $ 1900 and also the pers