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
GrogVix [38]
3 years ago
11

How to solve thus through substitution method. please do it step by step

Mathematics
2 answers:
Step2247 [10]3 years ago
8 0
Hey there!

To start, first solve the equation of -2x + 3y =4 for the value of x since the coefficients appear to be smaller and easier to work with than the equation 4x- 6y= 9.

To solve -2x+3y=4 for x, first subtract both sides by 3y to isolate -2x:
-2x+3y=4
-2x=-3y+4

Now, divide both sides by -2 to isolate or solve for the x variable:
-2x=-3y+4
x=3/2y-2

Now that you have x set equal to the expression 3/2y-2, substitute this value for x in the equation 4x-6y=9:
x=3/2y-2
4x-6y=9
4(3/2y-2)-6y=9

Now, simplify this expression and combine your like terms: 
4(3/2y-2)-6y=9
(4*3/2y)+(4*-2)-6y=9
6y-8-6y=9
-8=9

Because you end up in an untrue mathematical statement, your answer would be that there are no real solutions for this system. 

Hope this helps and have a marvelous day! :)



andrew11 [14]3 years ago
8 0
4x-6y=9
2x+3y=4

4x=9+6y
X=9/4+6y/4
2(9/4+6y/4)+3y=4
18/4+12y/4+3y=4
9/2+6y=4
6y=8/2- 9/2
6y= -1/2
y= -1/12 x= 17/8
You might be interested in
A skyscraper in London, England, has a roof in the shape of a square pyramid. Its approximate dimensions are shown in the net.
laiz [17]

Answer:

3300

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
A radio station is giving away T-shirts. the sizes are s, m, l, xl. the colors are red yellow and blue. how many different T-shi
sp2606 [1]
I think a four choices
7 0
3 years ago
10.) Kelly is flying a kite to which the angle of elevation is
jarptica [38.1K]

Answer:

61.08m

Step-by-step explanation:

Let " l " be the length of the rope and " θ " the angle at which it is raised. In other words:

  • l = 65m
  • θ = 70°

As you can see, there has been made a right angle triangle. So:

sin70 =  \frac{h}{l}  \\ h = l \times sin70 \\ h = 65 \times 0.9397 = 61.08 \\ h = 61.08

So the kite is approximately 61.08m above the ground.

In order to find the sin70° i used a calculator.

3 0
3 years ago
What is the next letter a z b y c x d
Nataliya [291]
The next logical letter would be w.
This pattern starts at the first letter, then the last letter, then the second letter, then the second to last, the third, third to last, and so on.
6 0
3 years ago
Read 2 more answers
What is the slope of the line?
Simora [160]

Answer:

The slope is 0.5 or (1/2)

Step-by-step explanation:

Find the rise over run.

from -3 to -1 and 2 to 3 rises 1 runs 2 so then you divide 1/2 and get 0.5.

8 0
3 years ago
Other questions:
  • Plzzzzz help ASAP!!!!!!!!!
    6·2 answers
  • A square brick is 11 inches on each side. What is the area of one face of the brick?
    13·1 answer
  • Represent the arithmetic series using the recursive formula 94, 87, 80, 73,
    14·1 answer
  • Simplify the expression ASAP 8p3
    7·1 answer
  • In which situation is the distance traveled proportional to time?
    12·1 answer
  • Describe the process for<br> graphing the equation<br> y =-1/2x- 1
    14·1 answer
  • The sum of numbers is 28. the difference of two numbers is -2. find the numbers​
    14·2 answers
  • Noah has 10 meters of rip .How many pieces of rope length 1/2 meter can he cut from?
    14·2 answers
  • Explain the contast<br> 2-5 sentences
    7·1 answer
  • What is the value of n in the equation 2n+19=21​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!