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
defon
2 years ago
13

What is the solution to this system of linear equations 2x+y=1 and 3x-y=-6

Mathematics
1 answer:
nikklg [1K]2 years ago
8 0
2x + y = 1
3x - y = -6
---------------add
5x = -5
x = -5/5
x = -1

2(-1) + y = 1
-2 + y = 1
y = 1 + 2
y = 3

solution is (-1,3)
You might be interested in
A group of 18 people ordered soup and sandwiches for lunch. Each person in the group had either one soup or one sandwich. The sa
Black_prince [1.1K]
X - the number of sandwiches
y - the number of soups

x+y=18 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  |\times (-4.5) \\
7.75x+4.5y=113.5 \\ \\
-4.5x-4.5y=-81 \\
\underline{7.75x+4.5y=113.5} \\
7.75x-4.5x=113.5-81 \\
3.25x=32.5 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  |\div 3.25 \\
x=10

10 sandwiches were ordered. The answer is D.
6 0
3 years ago
Read 2 more answers
Enter the ratio as a fraction in lowest terms <br><br> 5ft to 58 in.
MrMuchimi

Answer:

30/29

Step-by-step explanation:

5 feet is 5*12 = 60 inches

Fraction is (60 in)/(58 in)

(60 in)/(58 in) = 30/29

8 0
2 years ago
Expand.If necessary combine like terms.(1+6x)(1-6x)
Anastaziya [24]

Answer:

-36x^2+1

Step-by-step explanation:

(1+6x)(1-6x)

= 1^2(6x)^2

= -36x^2+1

6 0
3 years ago
Read 2 more answers
Please Help ASAP!
Lynna [10]
First off, you should see whether the data is qualitative or quantitative.

-Quantitative is the number that represents counts or measurements.

-Qualitative (aka Categorical) typically labels or non-numeric entries

So, and example of some qualitative graphs are:
-Bar Graphs: usually comparison of things
-Two Way Tables: typically a survey with the comparison of data
-Circle Graph (Pie Chart): percentages being compared from different categories
-Frequency Tables: shows how often something appears

Some examples of quantitative graphs are:
-Box and Whiskers: shows the low, high, median of 1st quartile, median, median of 3rd quartile, and the high of data
-Line Graph: shows the change of something over a period of time
-Histogram: compares the data using frequency intervals, like 1-5, 6-10, etc.
-Scatterplot: shows the correlation of the data
-Stem and Leaf: first number goes in stem, remaining parts of number goes in leaf depending on what the first number it was, and key to help

So if you're trying to link the graph to something in your life, the graph may vary depending on what the data is. If you're going height over the years you've lived, a line graph would be best. It really depends what in your life you are doing, so I hope I provided enough information to help you out. Hope this helps!
7 0
3 years ago
Does the chart below represent a proportional relationship? What is the rate of change?
Lilit [14]

This chart represents a proportional relationship. The rate of change will be 4.

<h3>What is the constant of proportionality?</h3>

Firstly, there is a proportional relationship.

Two values x  and y are said to be in a proportional relationship if x=ky, where x and y are variables and k is a constant.

The constant k is called the constant of proportionality.

Given;

x y

1 4

2 8

3 12

4 16

Here, x = ky

put the first value

k = 1/4

This chart represents a proportional relationship.

So the rate of change will be

Rate = \dfrac{y_2 - y_1}{x_2 - x_1}\\\\Rate = \dfrac{8 - 4}{2 - 1}\\\\Rate = 4

Learn more about proportional ;

brainly.com/question/20048815

#SPJ1

5 0
2 years ago
Other questions:
  • Students are selling hand made magnets at the school craft fair one magnet cost $ 0.30, 2 magnets cost $ 0.43, 3 magnets cost $
    13·2 answers
  • PLEASE HELP!!!!!
    12·1 answer
  • Maria needs to buy 12 wine glasses. write an expression of the cost of 12 glasses at p dollars each.
    7·1 answer
  • A 2.2 GB game is being downloaded on your laptop. When you have downloaded half a gigabyte, you notice that your computer has be
    7·1 answer
  • PLS help me ASAP i will give thanks and 5 stars and please make sure to show your work
    8·1 answer
  • How is the area of a sail related to the weight of the pilot on a hang glider?
    13·2 answers
  • How did you get 5 by 9??????
    8·2 answers
  • What is the value of x in the equation -3x=4?
    7·1 answer
  • Write the algebraic expression 9r+2 as a verbal expression​
    12·1 answer
  • Find the midpoint of the segment with the following endpoints.<br> (-3,5) and (0, -1)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!