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

1.What is Historiography ?
A 64-year-old, fair-skinned man in good overall health spent a very hot, humid summer day gardening in his backyard. After several hours in the sun, he began to
Which design principle refers to the condition in which all the elements and principles of design work together to create a visually pleasing garment?
Raining Company analyzes its receivables to estimate bad debt expense. The accounts receivable balance is $200,000 and credit sales are $1,300,000. An aging of
Find x pls help thank you
Which point from the speech most validly supports Warren's argument that wage discrimination against women currently exists? "Women are ready to fight back agai
f(x) = (x + 1)(x - 3)(x-4) Need help ASAP
y = 2x + 1 y = 6x - 1
One year ago, you purchased a 7 percent coupon bond with a face value of $1,000 when it was selling for 102.5 percent of par. Today, you sold this bond for 104
I need helppppppppppp