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
docker41 [41]
2 years ago
9

Use the matrix tool to solve the system of equations. Choose the correct ordered pair.3x - 8y = -1 -2x + 6y = 1 A.(1, 1/2) B.(1/

2, 3) C.(1/2, 1) D.(3,1/2)
Mathematics
1 answer:
k0ka [10]2 years ago
4 0
\left\{\begin{array}{ccc}3x-8y=-1\\-2x+6y=1\end{array}\right\\\begin{array}{ccc}(i)\\(ii)\end{array}\left[\begin{array}{ccc}3&-8\\-2&6\end{array}\right\left|\begin{array}{ccc}-1\\1\end{array}\right]\xrightarrow{(i):3}\left[\begin{array}{ccc}1&-\frac{8}{3}\\-2&6\end{array}\right\left|\begin{array}{ccc}-\frac{1}{3}\\1\end{array}\right]\xrightarrow{(ii)+2(i)}
\left[\begin{array}{ccc}1&-\frac{8}{3}\\0&\frac{2}{3}\end{array}\right\left|\begin{array}{ccc}-\frac{1}{3}\\\frac{1}{3}\end{array}\right]\xrightarrow{(ii)\cdot\frac{3}{2}}\\\left[\begin{array}{ccc}1&-\frac{8}{3}\\0&1\end{array}\right\left|\begin{array}{ccc}-\frac{1}{3}\\\frac{1}{2}\end{array}\right]\xrightarrow{(i)+(ii)\cdot\frac{8}{3}}\\\left[\begin{array}{ccc}1&0\\0&1\end{array}\right\left|\begin{array}{ccc}1\\\frac{1}{2}\end{array}\right]

Answer:\boxed{ \left \{ {{x=1} \atop {y=\frac{1}{2}}} \right.\to\fbox{A.}}
You might be interested in
Add (13x – 4) and (–6x + 15)
kompoz [17]

(13x – 4) + (–6x + 15) =

13x - 4 - 6x + 15 =

7x + 11

4 0
3 years ago
The graph of a proportional relationship is a straight line passing through the?​
Aneli [31]
Through the origin (0,0)
7 0
2 years ago
Read 2 more answers
Is this correct if not can someone give me the answer I will mark u brilliant
Mila [183]

Answer: the first one is 735.75

the second one is 69

Step-by-step explanation:

THEY ARE BOTH CORRECT!

4 0
2 years ago
Read 2 more answers
Write an equation of the line that passes through the point (8, 1) with slope 5. A. y - 1 = 5(x − 8) B. y − 1 = - -5(x − 8) - C.
Artemon [7]

Answer:

y-1=5(x-8)

5 0
1 year ago
The line plot shows the amount of time (in hours) that Jodi practiced the flute over 8 days.
Sophie [7]

The answer is C. 5 1/2 hours. Hope this helped. :)

8 0
3 years ago
Other questions:
  • Can anyone help me with this and give me steps because I can’t figure it out
    5·1 answer
  • At the start of 2014 Mike's car was worth £12000.
    7·2 answers
  • Diana invested $3000 in a savings account for 3 years. She earned $450 in interest over that time period. What interest rate did
    6·2 answers
  • A triangle has an area of 30 cm2. The base and height are scaled by a factor of 4.
    6·1 answer
  • Pls Help im in a hurrry                                                                                                         
    12·2 answers
  • A large shipment of batteries (several million) contains 4% that are defecttive.It 60 batteries are selected randomly,What is th
    10·1 answer
  • Find the slope of the line through each pair of points. <br> (19, −16), (−7, −15)
    15·2 answers
  • Pls help extra points and mark brainlist
    13·1 answer
  • Which equation could generate the curve in the graph below?
    7·1 answer
  • What is the value of w?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!