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
Elena-2011 [213]
3 years ago
14

What is the solution to this system of equations using the linear combination method?

Mathematics
2 answers:
aniked [119]3 years ago
7 0

Answer:

\huge \boxed{x=-3 \ \mathrm{and} \ y=17}

\rule[225]{225}{2}

Step-by-step explanation:

Subtracting both equations:

    5x + y = 2

 -  (4x + y = 5)

————————

1x + 0y = -3

x = -3

Substituting x = -3 for the second equation:

4(-3) + y = 5

Solving for y.

-12 + y = 5

y = 17

\rule[225]{225}{2}

Gnom [1K]3 years ago
4 0
X= -3 y= 17 is the answer
You might be interested in
Can u show me common core way how to get the answer to this problem 4 1/5. ×4 3/8
AVprozaik [17]
I'm not quite sure what you mean by common core way but the way to get the answer the question is this:

1.) You must covert the whole numbers into fractions.

4 \frac{1}{5}  \: will \: become \:  \frac{21}{5}
(multiply the denominator by the whole number, which in this case is 4, then add the answer to the numerator).

4 \frac{3}{8 \:  }  \: will \: become \:  \frac{35}{8}
(same steps will apply as before except in this case there is a different denominator and numerator).

There is no need to make the denominators the same number since it is multiplication and not addition or subtraction (the same can be done with division expect there is one crucial difference which I can explain if you want, in the comments).

2.) Next set up the equation to multiply:

\frac{21}{5}  \times \frac{35}{8}
5 and simplify (also note that the only way you can't simplify is across)

\frac{21}{5}  \times  \frac{7}{8}
3.) Now multiply across:

NUMERATOR
21 × 7 = 147

DENOMINATOR
5 × 8 = 40

It will come together to be 147/40 or 3 27/40
5 0
3 years ago
Mimi has 18 more textbooks than Leah. Leah has b textbooks
larisa [96]

Answer:

It depends on how much Leah has.

Step-by-step explanation:

It depends on how much Leah has, so Leah=the b. 18+b=your answer

8 0
3 years ago
Given: W (-4, 2) and Z (7, 5).<br> What is the slope of the line parallel to WZ?
Tatiana [17]

Answer:

\frac{3}{11}

Step-by-step explanation:

\frac{5-2}{7- (-4)}  =   \frac{3}{11}

3 0
3 years ago
Plz help me with this and plz show ur work!?! :)
Rufina [12.5K]

Answer:

Total height lowered = 75m

No of times balloon lowered = 5

Height lowered in each lowering = Total height lowered / No of times balloon lowered

                                                      = 75 / 5

                                                     = 15 m

The number indicated that each time balloon is lowered by 15 m

6 0
3 years ago
Evaluate. if n = 2 and y=-3<br> 5y + 2n
Marina CMI [18]

Answer:

-15+4

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • How can one fourthx − 3 = one halfx + 8 be set up as a system of equations?
    5·1 answer
  • How much does 42 fl oz
    9·1 answer
  • Sarah and Eva are swimming<br> use the ratio table to determine who is the faster swimmer
    5·1 answer
  • Stephen walks dogs to make money over the summer. At the beginning of the summer, he has $41. The table shows the total amount o
    14·1 answer
  • How do you factorise x^2+22x-103?​
    8·1 answer
  • How do you make 3x-7=(blank)x+12 have no solution?
    14·1 answer
  • A number b times 12 is at least 17.​
    12·1 answer
  • Please help!!!! Thank you!!
    5·2 answers
  • 100 POINTS!!!!!
    13·1 answer
  • Cory earns d dollars for every hour he works after school. On the weekends, his hourly wage is three times the sum of his after
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!