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
Norma-Jean [14]
3 years ago
11

Solve the system of equations using substitution.

Mathematics
2 answers:
tresset_1 [31]3 years ago
8 0

Answer:

The system of equations has no solution

Step-by-step explanation:

The method of substitution consists in solving one equation for a variable and replacing it in the other equation.

In this case one of the equations is already solved for one of the variables (y):

y = -2x + 1

So the next step is to plug this in the other equation wich is:

4x + 2y = -3

So we will have

4x + 2(-2x + 1) = -3

solving the parenthesis:

4x-4x -2= -3

-2= -3

wich is not a valid answer, so the system of equations has no solution.

True [87]3 years ago
6 0
4x+2(-2x+1)=-3
4x-4x+2=-3
2=-3 is not a true statement.

The answer is no solution
You might be interested in
What is the median for the following scores for Mrs. Johnson's first test? 59, 22, 87, 44, 96, 38, 70, 85, 79
katrin2010 [14]

To work out the median, you need to numerically sort the data (because currently, it's unordered).

The ordered set of data is: 22, 38, 44, 59, 70, 79, 85, 87, 96

Now you just need to pick the middle value, which is 70:

(as you can see: 22, 38, 44, 59, 70, 79, 85, 87, 96)

Therefore, your answer is 70 :)

8 0
3 years ago
Read 2 more answers
Whats the equation for this​
yawa3891 [41]

Answer:

x^2 + y^2 + 4x + 4y  = -119/16

Step-by-step explanation:

The axes x and y are calibrated in 0.25

If the circle is carefully considered, the radius r of the circle is:

r = -1.25 - (-2)

r = 0.75 units

The equation of a circle is given by:

(x - a)^2 + (y - b)^2 = r^2

The center of the circle (a, b) = (-2, -2)

Substituting  (a, b) = (-2, -2) and r = 0.75 into the given equation:

(x - (-2))^2 + (y - (-2))^2 = (3/4)^2\\\\(x + 2)^2 + (y + 2)^2 = (3/4)^2\\\\x^2 + 4x + 4 + y^2 + 4y + 4 = 9/16\\\\x^2 + y^2 + 4x + 4y + 8 = 9/16\\\\16x^2 + 16y^2 + 64x + 64y + 128 = 9\\\\16x^2 + 16y^2 + 64x + 64y  = -119\\\\x^2 + y^2 + 4x + 4y  = -119/16\\

5 0
3 years ago
Please help please please please
slamgirl [31]
If two events are dependent on each other you have to multiply the probability of the first event times the probability of the second event. 
first count all the marbles here there are 21
you are asked about picking two green marbles there are 7 out of the 21 total.
The first event would be 7/21
The second event would be 6/20 (since you didn't replace and you took out a green one)
now multiply your two fractions together:
and you get 1/10. 
8 0
3 years ago
I’m not quite sure how to answer this question.
Marina CMI [18]

When two shapes are mathematically similar, that means that all their sides are in a proportion.

We know the sieds of EH and AD, and so we can find the proportion of the shapes using these two sides.

EH/AD = 6/9 = 2/3

The ratio of EFGH to ABCD is 2:3

Now we have to find BC.

Becuase they're in proportion, we can form this equation:

\frac{8}{BC} = \frac{2}{3}

Cross multiply:

24 = 2*BC

Divide both sides by 2:

BC = 12 cm

Good luck!

6 0
3 years ago
What is 57/100 in the simplest form
DerKrebs [107]

Answer: 57%

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • What is 351,871 +101,949 but rounded to the hundred thousand?
    12·1 answer
  • Write a comparison sentence that represents this equation. 5x9=45
    7·1 answer
  • How do you do inverse operation to solve the equation 7p=28
    9·2 answers
  • Find the sum. Write the answer in simplest form. 1/4 + 1/5
    6·2 answers
  • Which of the following is true about the sampling distribution of means? Sampling distribution of the mean is always right skewe
    5·1 answer
  • Graph a function and it's inverse f(x) =x^2 -1​
    7·1 answer
  • (13x+2)+(3x-4)+(5x-7)​
    12·2 answers
  • I need help solving this please
    14·2 answers
  • The sum of 4 consecutive even numbers is 364 A. 91 B. 65 C. 89.5 D. 182​
    14·1 answer
  • George paid a total of $985 to rent a storage unit.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!