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
DENIUS [597]
3 years ago
14

Maya wrote the following matrix equation to represent a system of equations:

Mathematics
1 answer:
Ne4ueva [31]3 years ago
7 0
I am somehow confused with the given matrix. Because usually, when the system of equations is given as:

ax + by = c
dx + ey = f

the matrix would be written in this manner:

\left[\begin{array}{ccc}a&b&c\\d&e&f\end{array}\right]

Let me just assume that the arrangement of the given corresponds to this system of equations:

4x + 8y = 0
2x + 5y = 6

So you write it as 

\left[\begin{array}{ccc}4&8&0\\2&5&6\end{array}\right]

In order to solve this, the matrix should look like this where x and y are the answers

\left[\begin{array}{ccc}1&0&x\\0&1&y\end{array}\right]


So, the first thing to do is apply this pattern: Row 2 = Row 1 - 2*Row 2. The result will be

\left[\begin{array}{ccc}4&8&0\\0&-2&-12\end{array}\right]

Next, Row 1 = (Row 1/4) + R2:

\left[\begin{array}{ccc}1&0&-12\\0&-2&-12\end{array}\right]

Lastly, Row 2 = Row 2 / -2:

\left[\begin{array}{ccc}1&0&-12\\0&1&6\end{array}\right]

Thus, the answer is x=-12 and y=6.
You might be interested in
Solve r = 1/2m^2p for p
hoa [83]
You just have to arrange the equation such that the p is the only term at the left hand side of the equation. Express it in terms of r and m. 

r = 1/2*m²*p
Divide both left and right hand side equations by 1/2*m²
p = r/(1/2 *m²)
Take the reciprocal of 1/2 and multiply it. The final answer is:
p = 2r/m²
7 0
3 years ago
If f(x) = 2x and g(x) = x - 3, what is the value of f(g(5))?
Vesna [10]

Answer:

g(5)=5-3=2

f(2)=2×2=4

7 0
2 years ago
David, Morris, and Jose are the stars of the schools’ basketball team. In the last game, David earned twice as many points as Mo
Alexus [3.1K]

Answer:

Since he earned one third as many as Jose

it's 8

Step-by-step explanation:

  • \frac{1}{3}  \times 24 = 8
3 0
3 years ago
The world record for the greatest temperature range recorded in one day occurred in Browning,Montana in 1916.The temperature fel
zhannawk [14.2K]

Answer:

-100 F

Step-by-step explanation:

8 0
3 years ago
the high school debate team is developing a logo to represent their club. A scale drawing of the logo design is presented below,
Fantom [35]

Answer:

The enlargement will be 25 times and the enlargement area will be $2250 \text{ inches}^2$.

Step-by-step explanation:

It is given that each grid unit is equal to 3 inches. SO we have to use this scale.

The total height of the scale drawing is 21 inch and the enlargement has a height given as 105 inches. Therefore it has scale factor of 5. It means that each dimension is enlarged by 5 times the dimension in the scale drawing. So the enlargement of the logo will be 25 times and the enlargement area will be 2250 square inches.

7 0
2 years ago
Other questions:
  • What does congruent mean
    6·2 answers
  • A dollar bill is about 15.5 cm long. If seventeen trillion dollar bills were laid end to end around the Earth's equator, how man
    7·1 answer
  • What is the supplement of a 76 degree angle?
    14·2 answers
  • Does anyone know how to do 6? i’m dying over here
    6·1 answer
  • Last year, Manual opened an investment account with $5400. At the end of the year, the amount in the account had increased by 28
    9·1 answer
  • Please help with the problem in the picture ^ I’ll give brainliest if you give me a small explanation! :)
    15·1 answer
  • A group of friends wants to go to the amusement park. They have no more than $165
    11·1 answer
  • What is the equation of the line through (-6,-5) and (-4,-4) in slope -intercept form?
    14·1 answer
  • The product of a number and 32.
    10·1 answer
  • why is no one helping me...i want a good grade but I need someone who is good with slope and is smarter than a 8th grader BUT NO
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!