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
IgorLugansk [536]
3 years ago
10

Which systems of equations have infinite solutions 2x+5y=31 6x-y=13 or 2x+y=10 -6x=3y+7 or y=14-2x 6x+3y=42 or y=13-2x 4x-3y=-19

or 2x+y=14 x=13-2y or 2x+y=17 -6x=3y-51
Mathematics
1 answer:
Lerok [7]3 years ago
6 0

Answer:

  • y=14-2x; 6x+3y=42
  • 2x+y=17; -6x=3y-51

Step-by-step explanation:

Dependent equations will have infinite solutions. One way to tell if a system of equations is dependent is to put all of the equations into standard form. Here, we can use the form ...

  ax + by = c

where a, b, c are mutually prime integers and "a" is positive. When dependent equations are put in this form, they resolve to the same equation.

Here, the rearrangement is accomplished by putting the x- and y-terms on the same side of the equal sign, with the x-term having a positive coefficient. If necessary, the constant is put on the other side, and any common factors removed from all of them.

Then the sets of equations are ...

  • 2x +5y = 31
  • 6x -y = 13 . . . . not dependent

__

  • 2x +y = 10
  • 6x +3y = -7 . . . . not dependent

__

  • 2x +y = 14
  • 2x +y = 14 . . . . dependent

__

  • 2x +y = 13
  • 4x -3y = -19 . . . . not dependent

__

  • 2x +y = 14
  • x +2y = 13 . . . . not dependent

__

  • 2x +y = 17
  • 2x +y = 17 . . . . dependent

__

The 3rd and 5th sets of equations are dependent, so have infinite solutions.

_____

The second set of equations is inconsistent, so has no solutions.

You might be interested in
(71 + 29) x 26 in words
shepuryov [24]
Parentheses seventy - one plus twenty - nine parentheses times twenty - six
3 0
3 years ago
Find x . Please and thank you
Mila [183]

Answer:

x = 6

Step-by-step explanation:

In similar triangles,  corresponding sides are in same ratio

\frac{x+3}{3}= \frac{6}{2}\\\\ \frac{x+3}{3}=3\\\\x+3 = 3*3\\\\x+3 = 9\\\\x = 9-3\\\\x = 6

8 0
2 years ago
30 points. Pls help if you can. Will mark brainliest!! I need how you got the answer pls <3 11) A box has Snickers, Milky Way
olga_2 [115]

Answer:

B is the answer

Step-by-step explanation:

Im the best

7 0
3 years ago
3n^2=6-17n I need Vertex form please.
nasty-shy [4]

Answer:

3( n + \frac{17}{6} )² - \frac{361}{12} = 0

Step-by-step explanation:

3n² = 6 - 17n ⇔ 3n² + 17n - 6 = 0

3( n² + 2 × \frac{17}{6} n + ( \frac{17}{6} )² - ( \frac{17}{6} )² - 2 ) = 0

3( n + \frac{17}{6} )² - 3 × \frac{289}{36} - 6 = 0

3( n + \frac{17}{6} )² - \frac{361}{12} = 0

8 0
2 years ago
Find the missing side link when the area is 171 km².
polet [3.4K]

The missing side is 9km

7 0
3 years ago
Other questions:
  • the mendez family just bought a home for 180,000 if the value of the home increases at a rate of 3% per year, use an exponential
    8·1 answer
  • Express √-225 in its simplest terms
    15·2 answers
  • Sin 75 degrees. Round answer to four decimal places.
    7·1 answer
  • Ask a question ^^ this
    7·1 answer
  • Translate the sentence into an equation.
    14·1 answer
  • Help pls!!!!!!!!!!!!!!!!1
    6·2 answers
  • X + 8 = -6<br><br> need this asap ty
    7·2 answers
  • Will Give Brainliest, Question is attached.
    10·1 answer
  • What is 15 meters decreased by 60%
    8·2 answers
  • The hollow sphere, in which the circus motorcyclist performs his stunts, has a diameter of 7 m. Find the area available to the m
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!