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
Levart [38]
3 years ago
14

X-y=16 7x+2y=13 solving system of Equations by substitution

Advanced Placement (AP)
1 answer:
matrenka [14]3 years ago
6 0

Answer:

The answer is "x= -\frac{19}{5} \ and \ y= - \frac{99}{5}"

Explanation:

\to x-y=16..........(a) \\\\ \to 7x+2y=13.........(b)\\

In equation (a) multiply by 2 then subtract from the equation (b):

7x+2y=13\\\\2x-2y=32\\\\- \  -\ =  -\ \\\\5x = -19 \\\\x= -\frac{19}{5}

put the value of x in equation (a):

-\frac{19}{5} -y=16\\\\ -y=16 +\frac{19}{5}\\\\-y=  \frac{80+19}{5}\\\\y= -\frac{99}{5}

You might be interested in
Your boss asks you to design a room that can be as soundproof as possible and provides you with three samples of material. The o
BigorU [14]
I think the answer will be B
8 0
3 years ago
Read 2 more answers
What is the use of blood nitrogen urea and creatine
emmainna [20.7K]
Blood urea nitrogen (BUN) and creatinine tests can be used together to find the BUN-to-creatinine ratio (BUN:creatinine). A BUN-to-creatinine ratio can help your doctor check for problems, such as dehydration, that may cause abnormal BUN and creatinine levels.
5 0
3 years ago
Students who want to create an effective presentation should come up with material as they go along. avoid engaging with the aud
hodyreva [135]

Answer:

C. interact frequently with the audience.

Explanation:

Presentation can be defined as an act of talking or speaking formally to an audience in order to explain an idea, piece of work, project, and product with the aid of multimedia resources or samples.

Students who want to create an effective presentation should interact frequently with the audience.

This ultimately implies that, to create an effective presentation, speakers are saddled with the responsibility of interacting more often with the audience by taking questions, making a joke, getting them to repeat informations loud at intervals etc.

Additionally, students are advised to be passionate and show enthusiasm during their presentation because it would enhance their ability to speak confidently and as such leading to an engaging presentation.

5 0
3 years ago
Read 2 more answers
Which of the following is true of the complete circular flow model of an open economy?
DanielleElmas [232]
I don’t really know what your trying to say lol but keep trying girl you got this haha
4 0
3 years ago
State four importance of seasoning timber.
maksim [4K]

Answer:

To change and improve the properties of wood. To make a correct percentage of shrinking of woods. To make a confident use of woods. To reduce the adverse behavior of woods.

To make a confident use of woods. To reduce the adverse behavior of woods.Explanation:

<em>hope</em><em> </em><em>it'll help you</em><em>.</em><em>.</em><em>.</em>

7 0
3 years ago
Other questions:
  • PLZ I WILL MARK BRAINLIEST
    12·1 answer
  • How did the Silk Road impact the grown of the development of Afro-Eurasia
    7·1 answer
  • Where on Earth's surface might you be experiencing the westerlies? Explain how air pressure, temperature, and the Coriolis effec
    9·1 answer
  • A researcher recorded the time
    5·1 answer
  • What are the rates of soil erosion today compared to the past
    9·2 answers
  • If 10,800 cm2 of material is available to make a box with a square base and an open top, find the largest possible volume of the
    9·2 answers
  • We are talking, admittedly, about an exquisite esthetic. Enormous pleasure can be extracted from feminine pursuits as a creative
    7·1 answer
  • In the fifth sentence of the first paragraph (“There is the League of Nations . . . reduction of armament”), the author comments
    13·1 answer
  • Students want to conduct an experiment to determine how road construction impacts the amount of PM in the air. They spread vasel
    5·1 answer
  • Which of the following statements is true?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!