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
Zepler [3.9K]
3 years ago
8

X+5y=5 3x-5y=3 Necesito ayuda, procedimiento para resolverlos y maneras distintas de resolverlos. Denuncio a quien venga por los

puntos.
Mathematics
1 answer:
qaws [65]3 years ago
5 0

Answer:

Se puede resolver el sistema de ecuaciones por sustitución, igualación o determinante. La solución de este sistema es (x,y) = \left(2,\frac{3}{5} \right).

Step-by-step explanation:

Sea el sistema de ecuaciones que se describe abajo:

x+5\cdot y = 5 (1)

3\cdot x -5\cdot y = 3 (2)

Existen por lo menos tres métodos analíticos para la resolución de este sistema de ecuaciones:

(i) Sustitución

Despejamos x en (1):

x = 5-5\cdot y

Aplicamos la expresión resultante en (2):

3\cdot \left(5-5\cdot y\right)-5\cdot y = 3

Luego, resolvemos la ecuación resultante:

15  - 15\cdot y -5\cdot y = 3

-20\cdot y = -12

y = \frac{3}{5}

Luego, determinamos el valor de x:

x = 2

(ii) Igualación

Despejamos 5\cdot y en cada expresión:

5\cdot y = 5 - x (3)

5\cdot y = 3\cdot x - 3 (4)

Ahora, igualamos (3) y (4) y simplificamos:

5-x = 3\cdot x -3

4\cdot x = 8

x = 2

Finalmente, calculamos y en (3):

y = 1 - \frac{x}{5}

y = \frac{3}{5}

(iii) Determinante

Aplicamos las siguientes fórmulas para determinar cada variable:

x = \frac{\left|\begin{array}{ccc}5&5\\3&-5\end{array}\right| }{\left|\begin{array}{ccc}1&5\\3&-5\end{array}\right|}

x = \frac{-25-15}{-5-15}

x = 2

y = \frac{\left|\begin{array}{ccc}1&5\\3&3\end{array}\right| }{\left|\begin{array}{ccc}1&5\\3&-5\end{array}\right|}

y = \frac{3-15}{-5-15}

y = \frac{3}{5}

Por ende, concluimos que la solución de este sistema es (x,y) = \left(2,\frac{3}{5} \right).

You might be interested in
BRAINLIESTTT ASAP!! Explain in your own words. :)<br><br> Describe Chadwick’s work in Chemistry.
Svet_ta [14]

Answer:

Here's what I get  

Step-by-step explanation:

The atomic model before Chadwick

J. J. Thomson had discovered the electron in 1897 and Rutherford discovered the proton in 1912.  

So, in the 1920s, scientists thought that a helium atom (₂⁴He), for example, consisted of four protons,  two electrons orbiting the nucleus, and another two electrons in the nucleus to balance the charge.  

In 1932, Irène and Frédérick Joliot-Curie discovered that when α particles hit a Be target, a strange radiation was emitted that could knock protons out of paraffin. They thought it was some type of high-energy X-rays  

Chadwick's experiment

Chadwick thought the radiation consisted of particles, not X-rays. He repeated the Curie's experiment and carefully measured the velocities of the scattered protons.

Using the Laws of Conservation of Energy and Momentum, he calculated that the radiation hitting the paraffin must consist of neutral particles with a mass slightly greater than that of a proton.

Chadwick had discovered the neutron.

The atomic model after Chadwick

Chemistry now made more sense. A helium atom now consisted of two electrons orbiting a nucleus containing two protons and two neutrons. There was no need to have electrons in the nucleus.

3 0
3 years ago
11- Pre-algebra problem pls help
Juliette [100K]

Answer:

The answer is c

Step-by-step explanation:

3 0
3 years ago
Vance used the associative property to write (4.5m+7/8)-9 as the equivalent expression 4.5(7/8-9). Did Vance apply the associati
baherus [9]
Answer: the fourth choice: <span>No, the addition symbol was dropped in the second expression

Justification:

1) The right operation is: </span><span>(4.5m + 7/8) - 9 </span><span>= 4.5m + (7/8 - 9), this is you have to keep the + operator, since you are just grouping the terms in an alternate form.

2) Droping the + operator leads incorrectly to the multiplication of the first term, 4.5m to the terms in parenthesis, instead to the addition, which is what corresponds.

</span>
4 0
4 years ago
Read 2 more answers
Are the terms 2x3y and 2yxlike terms? Explain. (2 points)
Svetach [21]

Answer:

Step-by-step explanation:

2x^3y and 2yx are not like terms since x^3 can't be added to x since it's not x^3 but x^2.

4 0
3 years ago
Graph the ordered pairs for y = 4x + 2 using x = {-2, 1, 2}
Grace [21]

Answer:

The answer in the attached figure

Step-by-step explanation:

we have

y=4x+2      

The graph of this equation is a straight line

The domain is all real numbers

The range is all real numbers

Step 1

Find the value of y for x=-2

Substitute the value of x in the equation and solve for y

y=4(-2)+2

y=-8+2

y=-6

The ordered pair is the point (-2,-6)

Step 2

Find the value of y for x=1

Substitute the value of x in the equation and solve for y

y=4(1)+2

y=4+2

y=6

The ordered pair is the point (1,6)

Step 3

Find the value of y for x=2

Substitute the value of x in the equation and solve for y

y=4(2)+2

y=8+2

y=10

The ordered pair is the point (2,10)

Step 4

Plot the ordered pairs

(-2,-6)

(1,6)  

(2,10)

see the attached figures    


3 0
3 years ago
Read 2 more answers
Other questions:
  • The length of a rectangle is 22 meters longer than the width. if the area is 2626 square​ meters, find the​ rectangle's dimensio
    15·1 answer
  • WILL GIVE BRAINLIST AS SOON AS I CAN... is this 6??​
    12·1 answer
  • Two trains travel at right angles to each other after leaving the same train station at the same time. Two hours later they are
    5·1 answer
  • HURRYYY!!! 20 POINTS AND BRAINLIEST IF CORRECT.
    12·1 answer
  • What is 85% written as a fraction? A) 17/20 B)1 3/17 C)0.85
    12·2 answers
  • What is the 31st term of the sequence: 4, -3, -10, -17
    10·1 answer
  • Please I really need help!!! Can someone pls help me??
    13·1 answer
  • 0.5 ft of snow melts to 2inches of H2o. To how many inches will 4.5 ft of snow melt?​
    5·1 answer
  • PLEASE HELP WILL MARK BRAINLIEST IM Litteraly crying im gonna faill plsssss!!!
    8·2 answers
  • 28 points I really need helppppppp
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!