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
Alexis wants to make a paperweight at pottery class. He designs a pyramid-like model with a base area of 100 square centimeters
grigory [225]

Answer:

The density of the material must be at least 1.5 g/cm³.

Step-by-step explanation:

5 0
3 years ago
What is an equation of the line that passes through the points (8, 2)(8,2) and (-4, 5)(−4,5)?
SOVA2 [1]

Answer:

y = -1/4x + 4

Step-by-step explanation:

(8,2) and (-4, 5)

Slope = (5 - 2)/(-4 - 8)

= 3/-12 = -1/4

Point (8,2)

b = 2 - (- 1/4)(8)

b 2+ 2 = 4

5 0
3 years ago
You need $40 $ 40 to buy a new pair of shoes. You have saved $15 $ 15 . Which inequality models how much more you must save?
Hoochie [10]

Answer:

40 < 15+x

Step-by-step explanation:

8 0
3 years ago
How many integers are there that consist of four digits (from 1000 to 9999) where the first digit is a 5 or an 8 and the third d
Ostrovityanka [42]

Answer:

1600 integers

Step-by-step explanation:

Since we have a four digit number, there are four digit placements.

For the first digit, since there can either be a 5 or an 8, we have the arrangement as ²P₁ = 2 ways.

For the second digit, we have ten numbers to choose from, so we have ¹⁰P₁ = 10.

For the third digit, since it neither be a 5 or an 8, we have two less digit from the total of ten digits which is 10 - 2 = 8. So, the number of ways of arranging that is ⁸P₁ = 8.

For the last digit, we have ten numbers to choose from, so we have ¹⁰P₁ = 10.

So, the number of integers that can be formed are 2 × 10 × 8 × 10 = 20 × 80 = 1600 integers

5 0
3 years ago
Percent of change 125 is increased to 200
Montano1993 [528]

Answer:

60

Step-by-Step Explanation:

(200-125):125*100 =

(200:125-1)*100 =

160-100 = 60

Now we have: What is the percentage increase/decrease from 125 to 200 = 60

6 0
2 years ago
Read 2 more answers
Other questions:
  • Need help with this pls <br> Show work pls!!!!!
    7·1 answer
  • Assume that the numbers of a data set are arranged in ascending order. Which statement about the third quartile is true? All of
    9·2 answers
  • What is the relationship between the 5s in the number 755,371
    14·2 answers
  • According to the diagram below, what is the probability of landing on 1 ?
    12·2 answers
  • 7h=-(-2h-18) solve for h please im giving out brainliest
    14·1 answer
  • F (x) = cx + 3
    9·1 answer
  • A density graph is used to find the probability of a discrete random variable
    6·1 answer
  • 7 Valley Video rented 1540 videos in July.
    11·1 answer
  • At approximately what angle does the wire meet the ground? 33.6° 39.8° 50.2° 56.4°
    12·1 answer
  • How do you find the degree of an expression?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!