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
Amiraneli [1.4K]
3 years ago
14

Solve the system using elimination PLEASE SHOW ALL WORK 5x+4y=12 3x-3y=18

Mathematics
2 answers:
marta [7]3 years ago
7 0
5x + 4y = 12....multiply by 3
3x - 3y = 18 ...multiply by -5
----------------
15x + 12y = 36 (result of multiplying by 3)
-15x + 15y = - 90 (result of multiplying by -5)
----------------------add
27y = - 54
y = -54/27
y = -2

5x + 4y = 12
5x + 4(-2) = 12
5x - 8 = 12
5x = 12 + 8
5x = 20
x = 20/5
x = 4

solution is : (4,-2) <=
Step2247 [10]3 years ago
3 0
<span><span>5x+4y</span>=12</span>Step 1: Add -4y to both sides.<span><span><span>5x+4y</span>+<span>−4y</span></span>=<span>12+<span>−4y</span></span></span><span>5x=<span><span>−4y</span>+12</span></span>Step 2: Divide both sides by 5.<span><span>5x5</span>=<span><span><span>−4y</span>+12</span>5</span></span><span>x=<span><span><span>−45</span>y</span>+125</span></span>Answer:<span>x=<span><span><span>−45</span>y</span>+<span>12<span>5
question 2:
</span></span></span></span><span><span><span>3x</span>−<span>3y</span></span>=18</span>Step 1: Add 3y to both sides.<span><span><span><span>3x</span>−<span>3y</span></span>+<span>3y</span></span>=<span>18+<span>3y</span></span></span><span><span>3x</span>=<span><span>3y</span>+18</span></span>Step 2: Divide both sides by 3.<span><span><span>3x</span>3</span>=<span><span><span>3y</span>+18</span>3</span></span><span>x=<span>y+6</span></span>Answer:<span>x=<span>y+<span>6</span></span></span>
You might be interested in
What’s the answer please help
sp2606 [1]

Answer:

{121,144,169} X intersecting Y means common number between x and y set

5 0
3 years ago
Can you please help me with my math thank you
gayaneshka [121]
2•8.2•5.1=83.64 square feet.
ANSWER: 83.64 Square Feet
7 0
3 years ago
Which two-dimensional figure could be a cross section of a rectangular pyramid that has been intersected by a plane perpendicula
DanielleElmas [232]
The choices are found elsewhere and the figures would be:
a. rectangleb. trianglec. squared. trapezoid
From the choices, the answer would be option B. A triangle figure would be the cross section when <span>a rectangular pyramid that has been intersected by a plane perpendicular to its base and through</span>its vertex.
7 0
3 years ago
Which relation is a function?<br>Do Not Post A Link.​
Schach [20]
the one that starts with (-2,-2)
5 0
3 years ago
Find the surface area of the prism.
Mrac [35]

Answer: 136

Step-by-step explanation: 5x7=35 5x7=35 6x4/2=12 6x4/2=12 7x6=42 35+35+12+12+42=136

8 0
3 years ago
Read 2 more answers
Other questions:
  • Tungsten, W-181 is a radioactive isotope with a half life of 121 days. If a medical lab purchase 24 kg of W-181 how much will be
    7·2 answers
  • Solve –4x = –36.<br> –9<br> –32<br> 9<br> –40
    13·2 answers
  • What is the value of 2x^-2y^-2for x=3 and y=-2​
    5·1 answer
  • Find the derivative of ln(secx+tanx)
    6·1 answer
  • Which function is represented by the graph below? graph begins in the second quadrant near the x−axis and increases slowly while
    14·2 answers
  • A positive number divided by a negative number will result in a ___ quotient.
    6·1 answer
  • Can you please help me <br> I’ll mark you as brainliest:)
    6·1 answer
  • Giving brainlist to whoever answers
    12·1 answer
  • FIND THE PRODUCTS OR QUOTIENYS IN THE EXPONENTIAL FORMS BY USING LAWS OF INDICES.​
    9·1 answer
  • What is the slope of the line with the equation 9x=6+6y
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!