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
AfilCa [17]
3 years ago
9

Can someone help me on number 9 please?

Mathematics
2 answers:
Vikki [24]3 years ago
8 0
-x+3y=0\\
2x+6y=12\\\\
-x+3y=0\\
x+3y=6\\
------\\
6y=6\\
y=1\\\\
x+3\cdot1=6\\
x+3=6\\
x=3

Minchanka [31]3 years ago
3 0
\left\{\begin{array}{ccc}-x+3y=0\\2x+6y=12&|divide\ both\ sides\ by\ (-2)\end{array}\right\\\\+\left\{\begin{array}{ccc}-x+3y=0\\-x-3y=-6\end{array}\right\ add\ sides\ of\ equations\\----------\\.\ \ \ \ \ -2x=-6\ \ \ \ |divide\ both\ sides\ by\ (-2)\\.\ \ \ \ \ \ \ \boxed{x=3}\\\\-3+3y=0\ \ \ \ \ \ |add\ 3\ to\ both\ sides\\3y=3\ \ \ \ \ \ |divide\ both\ sides\ by\ 3\\\boxed{y=1}\\\\Answer:x=3\ and\ y=1\to(3;\ 1).

You might be interested in
Plxxx help me (Giving brainlyiest)
grandymaker [24]

Answer:

that is a I hope this helps you

3 0
2 years ago
Read 2 more answers
Solve 15 ≥ -3x or 2/3 x ≥ -2.
hjlf
Solve each of the equations independently, then determine if the are continuous or discontinuous. 
15≥-3x [start here]
-5≤x    [divide both sides by (-3). *Dividing by a negative number means the direction of the sign changes!]
x≥-5  [just turned around for analysis]

Next equation:
2/3x≥-2    [start here]
x≥-2(3/2)  [multiply both sides of the equation by the reciprocal, 3/2)
x≥-3

So, (according to the first equation) all values of x must be greater than, or equal to -5.

(According to the second equation) all values of x must be greater than, or equal to -3. 
So, when graphed on a number line, both equations graph in the same direction, so they are continuous.

4 0
3 years ago
Read 2 more answers
A book has 8 chapters of equal length. Mary has read 4 chapters. What fraction of the book does Mary have left to read
11111nata11111 [884]

Answer:  1/2 I am almost sure thesis the right answer

7 0
3 years ago
Read 2 more answers
I need the answer please asp
11Alexandr11 [23.1K]

Answer:

The answer is a isosceles right I think.

8 0
2 years ago
Solve the matrix equation. The inverse of the coefficient matrix is given. EXPLAIN. The answer's D. (2/9,-4/3,-1/3)
Lerok [7]

Answer:

Right answer is D number

4 0
3 years ago
Other questions:
  • Paul is creating a pizza with a choice of crust, one type of cheese, one meat, and one vegetable topping. If he can choose from
    7·2 answers
  • To which subsets of real numbers does the number -22 belong? Choose all that apply.
    14·1 answer
  • What is the best classification of 0 in the real number system?
    5·1 answer
  • Solve for x. Round to the nearest hundredth.
    14·1 answer
  • Carmen predicted in a read a thon mr.cole pledged $4.00per book and gave carmen 44$. how many books did carmen read
    15·1 answer
  • What is the value of 4x^2 + 5x . when x = 1
    15·2 answers
  • I need help please ?!!!
    15·1 answer
  • A family buys 4 airline tickets and travel insurance that costs $18 per ticket. The total cost is $680. Let x represent the pric
    8·1 answer
  • PLZ HELP ME!!!
    14·1 answer
  • Suppose f(x) = mx + b. What is the inverse function in terms of m and b?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!