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]
4 years ago
14

X + 3y=-12 5x – 3y=-6 How do you solve this situation by substitution

Mathematics
2 answers:
goldfiish [28.3K]4 years ago
8 0
To solve this by substitution, you can take one of the equations and get a variable alone on one side, so:

x + 3y = -12
x = -3y - 12

Next, you can plug -3y-12 in for the x values in the second equation to get:

5(-3y - 12) - 3y = -6
-15y -60 - 3y = -6
-18y = 54
y = -3

And with the y value found, you can plug it back into the first equation to find x.

x + 3(-3) = -12
x - 9 = -12
x = -3
olga nikolaevna [1]4 years ago
8 0

Answer:

x + 3y = -12

x = -3y - 12

5(-3y - 12) - 3y = -6

-15y -60 - 3y = -6

-18y = 54

y = -3

x + 3(-3) = -12

x - 9 = -12

x = -3

You might be interested in
What is the value of f(3) when f(x) = 4x + 1
valentina_108 [34]

Here is the equation:

f(x)=4x+1

You need to find f(3). To do that, substitute all the x's with 3:

f(x)=4x+1 \rightarrow f(3)=4\times3 + 1

The first thing you need to do is multiply 4 by 3. Multiply:

4 \times 3 = 12

Here is your new equation:

f(3)=12+1

To get your answer, you need to add 12 and 1. Add:

12+1 = 13

That means:

\bf f(3)=13

<em>If you have any questions, feel free to ask in the comments! :)</em>

3 0
3 years ago
Read 2 more answers
Show your work please no links please!:)
BabaBlast [244]

Answer:

hgoahdjfgggfhhfjfhfjf mark me brainliestplz

Step-by-step explanation:

8 0
3 years ago
Someone help me please
Maslowich
It’s (d) because if one solution to a quadratic function g is the solution given then the other solution must be it’s complex conjugate which is d.
6 0
2 years ago
-4/3,4/9,-4/27,4/81,-4/243...<br><br> what is the common ratio! HELP ASAP
kaheart [24]
Answer: The common ratio is -1/3

-----------------------------------------------------------

Work Shown:

Pick any term to divide it by the previous term. I'm going to pick the second term and divide it by the first term.

r = common ratio
r = (term 2) divided by (term 1)
r = (4/9) divided by (-4/3)
r = (4/9) * (-3/4) 
r = (4*(-3))/(9*4)
r = -12/36
r = -1/3
The common ratio is -1/3

This means you multiply each term by -1/3 to get the next term

For instance
term 2 = r*(term 1)
term 2 = (-1/3)*(-4/3)
term 2 = ((-1)*(-4))/(3*3)
term 2 = 4/9

3 0
4 years ago
Find the simple interest.
Mila [183]
<span>900(1.03)^5
900*1.1593=1,043.37 answer

</span>
6 0
4 years ago
Other questions:
  • Simplify 7t · s · 3rt
    11·2 answers
  • Olive walks at a rate of 4 miles per hour she lives 2 miles from the mews station how long wil it talk her to walk home from the
    6·1 answer
  • What is 0.8% as a fraction in simplest form?
    8·2 answers
  • Which of the following statements can be made about the parallelogram shown below? Note that the figure is not drawn to scale.
    7·1 answer
  • Given the initial point (2, 3), which other three points would make an isosceles trapezoid on the coordinate plane?
    13·1 answer
  • Can you help me with the top one please thnx
    12·2 answers
  • Help asap! i’ll mark as brainliest :)
    12·1 answer
  • Work out<br> 5 1/4+ 1/2 x2/3<br> Give your answer as a mixed number
    15·1 answer
  • Sophia invests $6,100 in a retirement account with a fixed annual interest rate of 5% compounded monthly. What will the account
    12·1 answer
  • How can I prove this answer
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!