djgenesisgeronp1qozx djgenesisgeronp1qozx
  • 04-10-2018
  • Mathematics
contestada

Question 5

Solve the following system of equations by using the substitution method.
y = 6x – 11
-2x – 3y = -7

(1, 2)

(2, 1)

(-3, 1)

(2, 4)

Respuesta :

lisboa lisboa
  • 04-10-2018

answer is (2,1)

y = 6x – 11

-2x – 3y = -7

Substitute 6x - 11 for y in the second equation

-2x – 3(6x-11) = -7

-2x – 18x +33 = -7

-20x + 33 = -7

Now subtract 33 on both sides

-20x   = -7 - 33

-20x = -40 ( divide by -20 on both sides)

x= 2

We know y = 6x -11

Plug in 2 for x  and find out y

y = 6(2) -11= 12 -11 = 1

So answer is (2,1)


Answer Link

Otras preguntas

Write an equation for the line that contains each pair of points. (-7,2) (5,-1)
how can you translate PIOVE A CATINELLE?​
Can someone help me with numbers 7-10 and plzzz show work I’ll give extra points plzzz
Find the equation of the line with slope m= -2 that contains the point (-8,18)
Which of the following is not considered a behavior? A. eating B. anxiety C. sleeping D. crying
A student put her ear on one end of a long piece of lead. She asked her friend to bang the other end of the lead with a hammer and heard the sound 5 seconds aft
What is the mass of HCL is consumed by the reaction of 1.5 mole of magnesium
List four legacies of the Puritans.
what was her batting average? help plz ​
what happens to the specific heat capacity of a material if it changes state? i.e. from solid to liquid