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
cluponka [151]
2 years ago
11

How do I solve this out??

Mathematics
1 answer:
GuDViN [60]2 years ago
7 0
<h3>Answer:</h3>

(x, y) = (7, -5)

<h3>Step-by-step explanation:</h3>

It generally works well to follow directions.

The matrix of coefficients is ...

\left[\begin{array}{cc}2&4\\-5&3\end{array}\right]

Its inverse is the transpose of the cofactor matrix, divided by the determinant. That is ...

\dfrac{1}{26}\left[\begin{array}{ccc}3&-4\\5&2\end{array}\right]

So the solution is the product of this and the vector of constants [-6, -50]. That product is ...

... x = (3·(-6) +(-4)(-50))/26 = 7

... y = (5·(-6) +2·(-50))/26 = -5

The solution using inverse matrices is ...

... (x, y) = (7, -5)

You might be interested in
Another 6th grade problem! (:
nata0808 [166]

Answer: There are <u>4</u> teams in the league

Step-by-step explanation:

(1) Add 14 four times: 14+14+14+14 = 56

(2) Multiply 14 four times: 14 x 4 = 56

(3) Combine both of these numbers into the <em>t  </em>factor: 14t = 56

(4) Divide both sides by 14 and simplify: (14t / 14) = 56/14 | t = <u>4</u> (simplified)  

7 0
3 years ago
Read 2 more answers
What is the relationship between two coplanar lines that are perpendicular to the same line?
grigory [225]

Answer:

If two lines are perpendicular to the same line, then the two lines are parallel, and if two lines are parallel, then their slopes are equal

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please help i’ll give brainliest
Assoli18 [71]

Answer: A

Step-by-step explanation:

An ordered pair is a solution if when substituted it makes the equation true. If when you substitute, it does not make the equation true then it is not a solution.

y = -5x - 4

Test:

-52 = -5(10) - 4

-52 = -54 FALSE

8 0
2 years ago
Read 2 more answers
The base of the figure shown is a cube with sides that are 12 inches long. The total height of the figure is 20 inches. The slan
elena-s [515]
It should be 960 square inches! :)
4 0
3 years ago
Read 2 more answers
Expanded form for 2,937,082
densk [106]
2000000 + 900000 + 30000 + 7000 + 80 + 2
5 0
3 years ago
Read 2 more answers
Other questions:
  • Kaitlin is on her way home in her car. She has driven 30 miles so far, which is two-thirds of the way home. What is the total le
    15·2 answers
  • The temperature rose 2°C each hour for 6 h. Use integers to find the total change in<br> temperature
    11·1 answer
  • Help geometry....................
    10·1 answer
  • Factor c2 +6C + 8 = 0
    5·1 answer
  • PLZZZ HELP MEEEE im in desprite need
    5·1 answer
  • Find the value of x , this like similar right triangles and geometric means and stuff
    9·1 answer
  • Rentwood and Sun City are 51 miles away from each other. How far away would the cities be on a map that has a scale of 3 inches:
    13·1 answer
  • HELP! A box is 70 cm long. Which of these is closest to the length of this box in feet? (1 inch = 2.54 cm)
    11·1 answer
  • A teacher gives a 10-point to a class of 10 children.
    9·1 answer
  • eldted. Go to volume of a cylinder C and volume of a cone e, and complete each step below.Question 1Drag the orange points on th
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!