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
kirza4 [7]
3 years ago
12

{x-3y=24} {3x+Y=12} Solve each of the following linear systems by eliminating

Mathematics
1 answer:
Katen [24]3 years ago
7 0
3x + y = 12 (multiply whole equation by 3)
x - 3y = 24

9x + 3y = 36
x - 3y = 24
10x = 60
x = 60 / 10
x = 6
puting the x value in 1st equation
3 (6) + y = 12
18 + y = 12
y = 12 - 18
y = -6

Answer x = 6
              y = -6
You might be interested in
3x squared - 2 x y when x=2 and y = 5
ira [324]

the Answer is 4 do order of operations

7 0
3 years ago
a cookie recipe calls 3 1/4 cups of flour. the recipe makes 3 dozen cookies. how much flour us needed to make 144 cookies
Mnenie [13.5K]

1 dozen = 12

144 / 12 = 12 dozen

12 dozen/ 3 = 4

They need 4 times the amount of flour:

3 1/4 x 4 = 13

They need 13 cups of flour

4 0
3 years ago
18 % of 90 is what number
Lyrx [107]
18 percent of 90 is 16.2
6 0
3 years ago
Read 2 more answers
I will give brainliest to best answer<br>Factorise completely (3x^2-5y^2)​
Artemon [7]
<h2><em>we can write (3x^2-5y^2) as (3x-5y)^2</em></h2><h2><em>( 3 x − 5 y ) 2   as  ( 3 x− 5 y ) ( 3 x− 5 y )</em></h2><h2><em>3 x ( 3 x − 5 y ) − 5 y ( 3x −5 y )</em></h2><h2><em>3 x ( 3 x − 5 y ) − 5 y (3 x − 5 y )</em></h2><h2><em>3 x ( 3 x ) + 3 x ( − 5y ) − 5 y ( 3 x ) − 5 y( -5 y )</em></h2><h2><em>9 x 2 − 15 x y − 15y x + 25 y 2 </em></h2><h2><em>  Subtract  15 y x  from  − 15 x y .</em></h2><h2><em>9 x 2 − 30 xy + 25 y 2</em></h2><h2><em>                                 HOPE IT HELPS(◕‿◕✿)    </em></h2><h2><em>                                             SMILE!!                                                                         </em></h2>
6 0
3 years ago
A bag of backed chips advertises that it now has 1/4 fewer calories than the old recipe.What is the percent of calories were rem
Mrrafil [7]

Answer:

25%

1/4 * 25 = 25/100

25/100=25%

7 0
3 years ago
Other questions:
  • If 4 inches represents 6 feet how many feet represent 1 inch​
    8·1 answer
  • Sketch the graph of the function f(x) = -(x-4)^3 by indicating how a more basic function has been shifted, reflected, stretched,
    15·1 answer
  • A researcher was studying how the weights of horseshoe crabs along the East Coast vary between northern and southern habitats. I
    9·1 answer
  • Example 4
    13·1 answer
  • You estimate that your school is about 49 ft tall. Your school is actually 58 ft tall. Find the percent error in your estimation
    7·2 answers
  • -75x + 200 represents a bank account balance after x months. What is the initial amount in the
    12·1 answer
  • square field has a side 150 m long .There is a road 5 m wide all around the park outside it .Find the cost of constructing the r
    9·1 answer
  • Which is an equation for the line shown?<br> A) x=2<br> B) y=2<br> C) x=-2<br> D) y=-2
    12·1 answer
  • Kayla did her homework as soon as she got home from school, it took her 2/3 of an hour, how many minutes did it take her to do h
    8·1 answer
  • 9. A box of cereal weighs 600 grams. How much is this weight in pounds?
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!