1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Svetlanka [38]
3 years ago
13

Use substitution to solve the system of equations.

Mathematics
2 answers:
adelina 88 [10]3 years ago
5 0

Answer:

(2, -5)

Step-by-step explanation:

x is defined by the first equation as x = -3y – 13.  Substitute  -3y – 13 for x in the second equation:

2( -3y – 13) + 2y = -6.

Performing the indicated multiplication, we get:

-6y - 26 + 2y = -6

Combining like terms results in:

-4y = 20, so that y = -5

Using the first equation, we find x for y = -5:

x = -3(-5) - 13 = 2

The solution is thus (2, -5) (Answer C)

omeli [17]3 years ago
5 0

Answer:

x=2 & y=-5, so the answer is C

Step-by-step explanation:

x = -3y-13 ------(1)

2x + 2y = -6 ---------(2)

sub(1)into(2)

(2)=> 2(-3y-13) + 2y = -6

-6y - 26 + 2y = -6

-4y = 20

y = -5

sub y=-5 into(1)

(1)=> x = -3(-5) - 13

= 15 - 13

= 2

You might be interested in
4 students each write an equation which student's equation is true
Setler79 [48]

Answer:

A

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Find the volume.<br> Thank you!!!
Alex Ar [27]

Answer:

84

Step-by-step explanation:

7*2*8

L*W*H

7 0
3 years ago
Read 2 more answers
How much is 290 dimes
sweet [91]
$29.00 and you can also multiply too is is a cool way
7 0
3 years ago
Read 2 more answers
I need help with both
Nookie1986 [14]
Hey There

According to me, 
no 1 is 
SQUARE

no. 2 is 
CONGRUENT

HOPE THIS HELPS
3 0
3 years ago
Read 2 more answers
7(-2k+4)-6=7k-20 what is the answer
lord [1]
The answer to this equation would be k=2
7 0
3 years ago
Other questions:
  • Which points are the vertices of the eclipse
    14·1 answer
  • Can anybody show me how to do this
    11·2 answers
  • Two urns contain white balls and yellow balls. The first urn contains 5 white balls and 8 yellow balls and the second urn contai
    15·1 answer
  • Who is a famous African American or someone else that you know I can write about?
    15·2 answers
  • Two triangles, Triangle 1 and triangle 2, are similar. Is it a Dilation?
    12·1 answer
  • Write equations for the vertical and horizontal lines passing through the point (8,-9)
    8·1 answer
  • What is the length of RST in centimeters
    14·1 answer
  • Select the correct answer. Cole’s age is 3 years less than his sister Tina’s age, t. If Cole is 18, which equation represents th
    11·1 answer
  • Need help on homework plz and thank u :)
    13·2 answers
  • Whats the formula helpppppppppp
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!