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
JulijaS [17]
2 years ago
10

Solve the system of equations by substitution. Show the steps that correspond with the substitution method.

Mathematics
1 answer:
Makovka662 [10]2 years ago
7 0

5x - 2(-2x - 5) = 19

5x + 4x +10 = 19

9x + 10 = 19

9x = 9

x = 1

y = -2(1) - 5

y = -2 - 5

y = -7

You might be interested in
Find the solutions of the quadratic equation -9c² +2 +3 = 0.
Tresset [83]

Given that,

An equation : -9c² +2c +3 = 0

To find,

Find the value of x.

Solution,

We have, -9c² +2c +3 = 0

We can solve it using the formula as follows :

x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

Here, a = -9, b = 2 and c =3

Put the values,

c=\dfrac{-2\pm \sqrt{(2)^2-4(-9)(3)}}{2(-9)}\\\\c=\dfrac{-2+\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}, \dfrac{-2-\sqrt{(2)^{2}-4(-9)(3)}}{2(-9)}\\\\c=-0.47, 0.69

So, the solution are -0.47 and 0.69.

8 0
3 years ago
Math is hard, please help this idiot TwT
DIA [1.3K]

here you go i hope this help u

3 0
2 years ago
-<img src="https://tex.z-dn.net/?f=%5Csqr%5Csqrt4-x%20%2B%5Csqrt%7B4-x" id="TexFormula1" title="\sqr\sqrt4-x +\sqrt{4-x" alt="\s
tankabanditka [31]

-2-x+\sqrt{-x+4}

8 0
3 years ago
Tolong aku pliss aku minta bantuan kalian makasih bgt yg udah membantu :)​
yawa3891 [41]

Answer:

b ata.....

Step-by-step explanation:

no explanation

3 0
2 years ago
Read 2 more answers
How to graph your answer to Question.<br> x - 4 &gt; 6
Umnica [9.8K]

Answer:

x > 10

Step-by-step explanation:

The graph is shown below:

If correct can you mark me brainliest

4 0
3 years ago
Other questions:
  • 9/10 divided by (-3/5)
    15·1 answer
  • One of the parcels weighs 2500 grams.
    5·2 answers
  • The scatter plot above show the relationship between the number of bags of popcorn that are sold and the price per bag. Which is
    11·1 answer
  • Sam ran 63,756 feet in 70 minutes . What is Sams rate in miles per hour ?
    12·1 answer
  • Find the rate of a/b and complete the equivalent ratio 69​
    5·1 answer
  • What is 10000000000053304950353953059490*0.8
    13·2 answers
  • Galila a sprinkler that sprays water in a circle. The circle has a 20-foot radius. Which of the following equations can be used
    5·1 answer
  • What is the answer for this
    6·2 answers
  • Solve the system by substitution.<br> 3x + y = 20<br> -7y=x<br><br> Please help
    5·1 answer
  • The question is on the sheet ​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!