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
Y_Kistochka [10]
3 years ago
10

Solve the system of equations below by elimination. (Show your work) 2x+3y=1 5x+7y=3

Mathematics
1 answer:
nikdorinn [45]3 years ago
8 0

Answer:

-2x+2y+3z=0

-2x-y+z=-3

2x+3y+3z=5

---------------

-2x+2y+3z=0

-2x-y+z=-3

---------------- Subtract

3y + 2z = 3 Eqn A

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

-2x-y+z=-3

 

2x+3y+3z=5

---------------- Add

2y + 4z = 2

6y + 4z = 6 Eqn A times 2

------------------------------------ Subtract

-4y = -4

y = 1

-----------------

z = 0

-------------------

x = 1

You might be interested in
The thickness of 12 sheets of paper is 3.16mm. Find the thickness of 1 sheet
Yuri [45]

Answer:

79/300 mm

Step-by-step explanation:

We can use Ratio and Proportion to answer this question,

We know,

12 sheets of paper = 3.16mm

So,

1 = 3.16/12 mm

So, the thickness of 1 sheet of paper is => 3.16 / 12

=> 79/300

Hope it helps :)

7 0
3 years ago
Read 2 more answers
A race car driver’s time in seconds to complete 12 laps is plotted on the graph. Why does the graph begin at x= 1?
Tcecarenko [31]
Because the y value is the time it takes to complete 1 lap.
7 0
3 years ago
There are 303 Students.<br> There are 147 Girls.<br> How Many Boys Are there?
Talja [164]
There are 156 boys at the school
7 0
3 years ago
Read 2 more answers
liam practiced piano 24 times in 4 weeks. his brother practiced piano 12 times in 14 days. are the rates at which each brother p
Tcecarenko [31]
Yes because if you simplify 24 and 4 weeks(28 days) by 2 than you would get 12 and 2 weeks(14 days)
5 0
4 years ago
Read 2 more answers
For a summer reading program, you are asked to read 3 books from a list of 8 book. how many different groups of 3 books can you
Molodets [167]
Answer-
You can read 2 groups of three books.

Step-by-step expression-
3 times 3 is 9. Since 9 is bigger than 8, you multiply 3 by 2. 3 times 2 is 6. Therefore, you can only read 2 groups of 3 books. Happy studying :))
8 0
3 years ago
Other questions:
  • For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 32 beats per​ minute, the mean of the
    10·1 answer
  • HELP WITH WORD PROBLEM - You want to find the probability that three out of five babies are boys. You decide to toss coins to si
    6·2 answers
  • Plz help with this problem plz
    15·2 answers
  • Four is no less then the quotient of a number x and 2.1
    14·1 answer
  • 30 POINTS
    6·1 answer
  • 1/6, 2/5, 3/5, 3/7 from least to greatest.
    10·1 answer
  • The coordinates of point Bare<br> (-3.2)<br> (2-3)<br> (2.3)
    13·1 answer
  • Is the answer one solution, infinite solutions or no solution ?
    7·2 answers
  • What is the slope for a line that goes through the points and (14, -3) and (10, 4)?
    10·2 answers
  • At the nearest​ store, 5 bags of food cost ​$. 17.50 How much would mary spend on 3 bags of dog ​food?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!