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
AleksandrR [38]
3 years ago
15

What is the solution to the system of equations 3x+2y=39 5x-y=13

Mathematics
2 answers:
muminat3 years ago
7 0

Solve: 3x + 2y = 39; 5x - y = 13


I will try to solve your system of equations:

5x - y = 13; 3x + 2y = 39


Solve 5x - y = 13 for y:


5x - y + - 5x = 13 + - 5x (add - 5x to both sides):


- y = - 5x + 13


- y/ - 1 = - 5x + 13/ - 1 (Divide both sides by - 1):



y = 5x - 13



Substitute 5x - 13 for y in 3x + 2y = 39


3x + 2y = 39


3x + 2(5x - 13) = 39


13x - 26 = 39 (Simplify both sides of the equation)


13x - 26 + 26 = 39 + 26 (Add 26 to both sides):


13x = 65


13x/13 = 65/13 (Divide both sides by 13)


x = 5




Substitute 5 for X in Y = 5x - 13


y = 5x - 13


y = (5)(5) - 13


y = 12 (Simplify both sides of the equation):



Answer: y = 12 and x = 5






Hope that helps!!!!! (Answer: y = 12 and x = 5).



Vadim26 [7]3 years ago
4 0

Hiya. I'm going to rewrite the second equation.

By subtracting 5x by both sides, I'll be able to have y by itself:

-y=-5x+13

I'm going to then divide both sides by -1 to get:

y=5x-13.


Then, I'm going to plug that equation into the first equation

3x+2(5x-13)=39

Factor:

3x+10x-26=39

Combine like terms:

13x=65

Divide both sides by 13 to get x by itself to get x=5


Plug this back into the equation of y=5x-13

y=5(5)-13 to get y=12

You might be interested in
What is 3/4 - 9/12. plz help
vova2212 [387]
3 divided by 4 subtract 9 divided by 12 equals 0. Hope this helps
8 0
3 years ago
Read 2 more answers
The area of a circular table cloth is 1,384.74 inches square. Using 3.14 for LaTeX: \pi
leonid [27]

Answer:

radius = 21

circumference = 138.88

Step-by-step explanation:

First divide the area by 3.14, this equal 441

441 is your radius squared.

Then you have to find the root of 441 which is 21.

radius = 21

diameter = twice the radius or 2 * radius

diameter = 21 * 2 = 42

diameter = 42

Then plug 42 in your circumference formula.

Which is then C = 3.14(42).

Which means the circumference is 131.88.

6 0
2 years ago
A health food store was charging $4.10 for a small salad but raised the price 8%. The new price after the increase is $4.43.Ente
Otrada [13]

Answer: $4.10*0.08%=0.33

Step-by-step explanation:

7 0
1 year ago
How to put this in $799.73 in numeric please help thank you
AlekseyPX
The answer is 800$...
6 0
3 years ago
Please help please please
monitta

Answer:

x=10

y=-2

(10,-2)

Step-by-step explanation:

If X=10, we can put 10 in for x in the equation.

30 + 5y = 20

Next, we need to solve to find y.

We will get y on its own so we subtract 30 from 20 to get

5y=-10

We then know that 5 goes into -10 -2 times.

y=-2

5 0
3 years ago
Other questions:
  • In a second grade class containing 12 girls and 11 boys, 2 students are selected at random to give out the math papers. what is
    8·2 answers
  • 1. Investigate if there is an association between survival past 500 days and treatment group.(a) Create a variable that indicate
    14·1 answer
  • Use cylindrical coordinates. find the volume of the solid that is enclosed by the cone z = x2 + y2 and the sphere x2 + y2 + z2 =
    8·1 answer
  • M is the midpoint of . The coordinates of A are (2,3) and the coordinates of M are (4.5,6). Find the coordinates of B.
    5·1 answer
  • AABC has vertices of A(-2, 2), B(-1, -2), C(-6, 1) and is translated right 7 and up 3.
    7·2 answers
  • Divide 6⁄13 by 6⁄12 .
    11·2 answers
  • Please help will mark brainliest..!
    5·1 answer
  • X + 15y - 8c + 6<br> What are the coefficients?
    11·2 answers
  • The perimeter of the figure below is 54.9 in. Find the length of the missing side.
    11·1 answer
  • PLS HELP ME !! ( WILL GIVE BRAINLIEST )
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!