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
kumpel [21]
2 years ago
8

Solve the system of linear equations using the matrix method. What do X and Y equal?

Mathematics
2 answers:
Virty [35]2 years ago
7 0

Answer:

The matrix method is basically making the matrix in the picture equal to

{1   0 = x}

{0   1 = y}

To do this you must multiply reciprocals and add opposites to make 2x = 1, 7y = 0, 3x = 0, and -12y = 1.

I used the simple way of solving linear equations:

3(2x + 7y = 48)

-2(3x - 12y = 27)

6x + 21y = 144

-6x + 24y = -42

       45y/45 = 102/45

y = 34/15 or 2.26667

Plug in y-value to get x-value:

2x + 7(34/15) = 48

     - 7(34/15)     -7(34/15)

2x = 482/15

2x/2 = 482/15/2

x = 241/15 or 16.06667

iren [92.7K]2 years ago
6 0
Algebra - Basic Definitions

A Variable is a symbol for a number we don't know yet. It is usually a letter like x or y. A number on its own is called a Constant.
You might be interested in
Write down the integer values that satisfy the inequality -5<_x<3
Naddik [55]

Answer:

(-4,-3,-2,-1,0,1,2)

Step-by-step explanation:

..........i hope it is............

8 0
2 years ago
Help me out please.<br><br> i need to find the function rule,
Ksivusya [100]

Replace x in the equations and see which one gets the matching y :

-5(0) = 0 +1 = 1

-5(1) = -5 + 1 = -4

-5(-1) = 5 +6 = 6

The first equation works.

7 0
2 years ago
A sphere has a diameter of 20 cm. What would bre the volume of sphere? Please help due today
Tomtit [17]
4188.79 would be de answer. Hope that helps.
6 0
3 years ago
Write a vector equation of the line that passes through p(–1 6) and is parallel to a = (3, -1).
Phoenix [80]

Answer:

C

Step-by-step explanation:

(x,y) = p + t(a)

(x,y) = (-1,6) + t(3,-1)

(x,y) - (-1,6) = t(3,-1)

(x + 1, y - 6) = t(3, -1)

7 0
3 years ago
Read 2 more answers
Please help please and thank you
Katyanochek1 [597]

Step-by-step explanation:

\text{We know:}\\\\\sin(-\alpha)=-\sin\alpha\\\\\sin(\alpha\pm k\cdot360^o)=\sin\alpha\\\\===============================\\\\\sin(360^o-\theta)=\sin\bigg(-(\theta-360^o)\bigg)=-\sin(\theta-360^o)=-\sin\theta

3 0
2 years ago
Other questions:
  • Ginger Yiu has a principal of $900 in her savings account with a 6% APR. The simple interest is calculated quarterly. What is th
    10·1 answer
  • What would <br> 675 + 456 be
    7·2 answers
  • Blanca earns a yearly salary of $55,000. Isabel earns a yearly salary of $63,000. Blanca will receive a salary increase of $3,70
    9·1 answer
  • A fruitstand has 18 red Apple just 40% of the total apples understand how many apples are there in the stand
    12·1 answer
  • Find the value of x to the nearest tenth.
    6·1 answer
  • I have to put 20 characters so here we are. Pls help tho.
    6·1 answer
  • Last year, Chau had $10,000 to invest. He invested some of it in an account that paid
    7·1 answer
  • Find the value of y.
    6·1 answer
  • 1. A family consists of 8 members: 2 grandparents, 1 parent, 3 sons and 2 daughters. The family is lining up to take a family pi
    13·1 answer
  • A solid has twelve more edges than faces. How many vertices does it have?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!