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
aliina [53]
3 years ago
7

Solve the simultaneous equations 2x+3y=9 4x+y=13

Mathematics
1 answer:
zlopas [31]3 years ago
4 0

Answer:

x=3, y=1

Step-by-step explanation:

2x+3y=9. Equation 1

4x+y=13   Equation 2

y=13-4x.  Modify equation 2 to isolate y

2x+3(13-4x)=9 subst value of y of equation 2 into equation 1

2x+39-12x=9 solve equation

-10x+39=9

-10x=-30

x=3

solve for y

2x+3y=9

2(3)+3y=9

6+3y=9

3y=3

y=1

Check answer:

4x+y=13

4(3)+1=13

13=13

You might be interested in
Add me as your friend
natka813 [3]

Answer:

no thank you

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Robert wants to put lights around the edge of his deck. The deck is 46 feet long and 23 feet wide. How many yards of lights does
Korolek [52]
46 yards is the answer

5 0
2 years ago
What is the range of this piecewise function
White raven [17]

Answer as a compound inequality: -4 \le y < 2

Answer in interval notation:  [-4, 2)

=============================================

Explanation:

The range is the set of all possible y outputs of a function. When dealing with a graph like this, we just look at the highest and lowest points to determine which y values are possible.

The lowest point occurs when y = -4. We include this value. So far we have y \ge -4 which is the same as -4 \le y

The upper ceiling for the y value is y = 2. We can't actually reach this value because of the open hole at (-3,2). So we say that y < 2

Combine -4 \le y and y < 2 to get the compound inequality -4 \le y < 2

This says y is between -4 and 2, including -4 but excluding 2.

To convert this to interval notation, we write [-4, 2) where the square bracket says to include the endpoint and the curved parenthesis says to exclude the endpoint.

6 0
3 years ago
What does K=Y/X stand for and mean?
Mamont248 [21]

Answer:

(k = y/x) which is the constant ratio between two proportional quantities y/x denoted by the symbol k which may be a positive rational number. The x value is directly proportional to the y value such as in the equation y = kx.

Step-by-step explanation:

the meaning of it means constant of proportionality

8 0
3 years ago
47 + 15 .....................
Igoryamba

Answer:

62

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Identify the vertex of the Parabola Please help!!
    8·2 answers
  • Simplify: 6(m+3n)-(7+4n)
    6·1 answer
  • When the blue trapezoid is translated to the green one, the new coordinates of the point (-2,8) will be​
    7·1 answer
  • Someone please help with A, B and C?
    14·2 answers
  • Solve for t in terms of s, u, and v
    9·1 answer
  • Ms. Robinson gave her class 12 minutes to read. Carrie read 5 ½ pages in that time. At what rate, in pages per hour, did Carrie
    9·2 answers
  • If (-2, y) lies on the graph of y = 4x, then y =<br><br> -16<br> 1/16<br> 16
    11·2 answers
  • Please help, it's very important!
    7·1 answer
  • The tables represent the functions f(x) and g(x).
    14·1 answer
  • assume the population of regulation basketball weights are normally distributed with a mean of 22 and a standard deviation of 1
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!