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
TiliK225 [7]
3 years ago
6

Solving Linear Systems: Using Substitution x=3y-4 3y - 4x = 6 someone pls help

Mathematics
2 answers:
wel3 years ago
7 0

Answer:

Point form : (- 2/3, 10/9)

Equation form : x=- 2/3, y=10/9

Step-by-step explanation: Solve for the first variable in one of the equations, then substitute the result into the other equation.

I hope this helps you out. :)

Vlad1618 [11]3 years ago
5 0

Answer:

x = -2/3

y = 10/9

Step-by-step explanation:

3y - 4x = 6

x=3y-4

Substitute the second equation into the first for x

3y - 4( 3y-4) =6

3y - 12y +16 = 6

Combine like terms

-9y +16 = 6

Subtract 16 from each side

-9y +16-16 = 6-16

-9y = -10

Divide by -9

-9y/-9 = -10/-9

y = 10/9

x = 3y -4

x =3(10/9) -4

 =10/3 - 12/3

  =-2/3

You might be interested in
Three pounds of lawn seed covers 1800 square feet how many 4 pound bags are needed to cover 8400 square feet.
VikaD [51]
You need to find the unit rate of 3 : 1800 first by dividing 1800 and 3

1800 ÷ 3 = 600

So this means for every 1 pound bag it covers 600 square feet. You now need to multiply 600 and 4 to see how many square feet 4 pounds cover.

600 × 4 = 2400

So each 4 pounds covers 2400 sq ft. Now you have to divide 8400 and 2400 to find how many bags of 4 pounds you need

8400 ÷ 2400= 3.5

You need 3.5 bags of 4 pounds.
Technically you would need 4 bags because you’d have to round it up.

Hope this helps you!! :)

7 0
3 years ago
Which of the following statements about the sampling distribution of the sample mean, x-bar, is not true? A. The sampling distri
Elenna [48]

Answer: E. All of the above statements are true

Step-by-step explanation:

The mean of sampling distribution of the mean is simply the population mean from which scores were being sampled. This implies that when population has a mean μ, it follows that mean of sampling distribution of mean will also be μ.

It should also be noted that the distribution's shape is symmetric and normal and there are no outliers from its overall pattern.

The statements about the sampling distribution of the sample mean, x-bar that are true include:

• The sampling distribution is normal regardless of the shape of the population distribution, as long as the sample size, n, is large enough.

• The sampling distribution is normal regardless of the sample size, as long as the population distribution is normal. • The sampling distribution's mean is the same as the population mean.

• The sampling distribution's standard deviation is smaller than the population standard deviation.

Therefore, option E is the correct answer as all the options are true.

7 0
3 years ago
Two math classes took the same quiz. The scores of 10 randomly selected students from each class are listed below. • Sample of C
padilas [110]

Answer:

Step-by-step explanation:

First you have to find the medians which is when you put the numbers in number order and find the one in the middle.

Class A: 60,65,70,70,75,80,80,85,90,90

=77.5

Class B: 75,85,85,85,90,90,90,90,95,100

=90

That the class B is more advanced, and they probably studied.

6 0
3 years ago
13. A counterexample
marin [14]

Answer:

b

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Does the function satisfy the hypotheses of the Mean Value Theorem on the given interval?
timama [110]
The Mean Value Theorem:
If a function is continuous on [ a, b ] and differentiable on ( a , b ) than there is a point c in ( a, b ) such that:
f ` ( c )=  ( f ( b ) - f ( a ) ) / ( b - a )
f ` ( c ) = ( f ( 2 ) - f ( 0 ) ) / ( 2 - 0 )
f `( x ) = 10 x - 3
f ` ( c ) = 10 c - 3 
2 f ` ( c ) = 16 - 2
f ` ( c ) = 7
7 = 10 c - 3
c = 1
Answer:
          Yes, the function is continuous on [ 0, 2 ] and differentiable on ( 0, 2 ).
4 0
3 years ago
Other questions:
  • What is the area of sector aeb when ae = 8 yd
    9·1 answer
  • Please find X for me this is Pythagorean theorem
    8·1 answer
  • What is the value of y?<br><br> 2x+3x=105<br> x+2y=65
    11·2 answers
  • Evaluate the following expression 2(1,0) -3(2,-1)<br> A-(2,3)<br> B-(-4,3)<br> C-(-3,-2)<br> D-(2,3)
    15·2 answers
  • Given: Angle1 and Angle2 are complements,
    12·2 answers
  • Last Wednesday, students could choose ham or turkey sandwiches for lunch. The cafeteria made 500 sandwiches in all, 270 of which
    12·1 answer
  • 3. In a certain school, there are 456 girls. Calculate the total number of students
    15·1 answer
  • Translate this sentence into an equation.
    14·1 answer
  • Using the following figure, determine the measure of.
    5·1 answer
  • I need help with the first question
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!