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
yan [13]
2 years ago
7

Solve system by elimination -9x - y =-19 5x + y = 15

Mathematics
1 answer:
vredina [299]2 years ago
6 0

Answer:

(1, 10 )

Step-by-step explanation:

Given the 2 equations

- 9x - y = - 19 → (1)

5x + y = 15 → (2)

Adding the 2 equations term by term will eliminate the y- term

- 4x + 0 = - 4

- 4x = - 4 ( divide both sides by - 4 )

x = 1

Substitute x = 1 into either of the 2 equations and solve for y

Substituting into (2)

5(1) + y = 15

5 + y = 15 ( subtract 5 from both sides )

y = 10

solution is (1, 10 )

You might be interested in
Help help math math math
Morgarella [4.7K]
The answer is x = 8

thank u
7 0
2 years ago
Read 2 more answers
What is the expression in factored form? 4x^2+11x+6<br><br>Show work please!!
Irina18 [472]
To solve this I'm going to split the middle term.
First multiply the first and last terms:
24x^2
So find two numbers that multiply to 24x^2 and add to 11x.
This would be 3x and 8x
Rewrite the problem as
4x^2+3x+8x+6
Take the first and 3rd and 2nd and 4th terms
4x^2 and 8x
and
3x and 6
Factor by grouping
Take out a 4x for the first group to get 4x(x+2)
Take out a 3 for the 2nd group to get 3(x+2)
Rewrite as (4x+3)(x+2)
Hope this helps.

6 0
3 years ago
Read 2 more answers
Solve using elimination.<br> 3x − 5y = 18 <br> -10x + 5y = 10
olga55 [171]

3x - 5y = 18 over

-10x + 5y = 10

Add them because the 5y's have the right symbols for us to add

-7x = 28

Divide

x = -4

Now you can plug in -4 for x in one equation, I would use the first equation!

3(-4) - 5y = 18

-12 - 5y = 18

Add 12

-5y = 30

Divide

y = -6

Your solutions are going to be:

x = -4

y = -6

To check your work plug x and y into one equation:

3(-4) - 5(-6) = 18

-12 + 30 = 18

18 = 18

Since 18 does equal 18 you know that your solution's work!

5 0
3 years ago
Read 2 more answers
Tiffany is solving an equation where both sides are quadratic expressions. She sets each quadratic equation equal to y and graph
Lapatulllka [165]

Answer:

Step-by-step explanation:

There are 3 possibilities for the graph as shown in the figure.

(a) having zero intersection

(b) having one intersection point (touching point)

(c) having two intersection points.

So, the greatest possible number of intersections for these graphs is 2 as shown in figure (c).

3 0
3 years ago
Read 2 more answers
PLZ PLZ PLZ ANSWER QUICK WILL GIVE BRAINIEST
Snezhnost [94]

Answer:

c

Step-by-step explanation:

let me know if you got it right

8 0
3 years ago
Read 2 more answers
Other questions:
  • Tom has 2700 cents from selling lemonade how many dollars does tom have
    6·2 answers
  • Choose the equation and the slope of the line that passes through (4, –2) and is parallel to the x-axis.
    6·1 answer
  • Miley drove 288 miles in 4 1/2 hours. What was Miley's average speed in miles per hour?
    8·2 answers
  • Biologists tagged 196 fish in a lake on January 1. On February​ 1, they returned and collected a random sample of 42 ​fish, 14 o
    6·1 answer
  • 2/3x=10 help please and explain
    10·2 answers
  • Is it 8 or 9? please clarify the correct answer, thx
    13·1 answer
  • An arrow is moving at 35 m/s and travels for 5 seconds. How far did the arrow travel?
    6·2 answers
  • Rayna and her husband have 8 niedes, 9 nephews, 6 cousins, 3 aunts, and 5 uncles. Eplain how you could use the fundamental count
    11·2 answers
  • What type of line is perpendicular to a linear equation that is not a function
    6·1 answer
  • The diagram shows MNP. Which term describes point Q?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!