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
Paladinen [302]
4 years ago
6

Solve the system of linear equations. −8x+5y=26 9x−3y=−3

Mathematics
1 answer:
Sloan [31]4 years ago
8 0

Answer: x = 3 and y = 10

Step-by-step explanation:

-8x + 5y = 26     .................. equation 1

9x - 3y = -3          ................ equation 2

Solving the system of linear equations by elimination method.

The means we have to make the coefficient of one of the variable the same in order to eliminate the variable first.

Let us eliminate the variable y first , this means we will multiply equation 1 by 3 and multiply equation 2 by 5. Doing this , we have

-24x + 15y = 78      ............. equation 3

45x - 15y = -15     ................ equation 4

Now that we have the same coefficient , we have to check their signs , if the have the same signs , we will subtract , that is , if both are having positive signs , we will subtract , if both have negative signs , we will also subtract but if their signs differ we will add. Following this rule and considering the equations above , the coefficients of y have different signs , so we will add equation 3 and equation 4 , so we have:

21x = 63

x = 63/21

x = 3

Substitute x = 3 into equation 1 or equation 2 to get the value of y , using equation 2 , we have

9x - 3y = -3

9(3) - 3y = -3

27 - 3y = -3

27+3 = 3y

30 = 3y

30/3 = y

Therefore y = 10

Therefore : x = 3 and y = 10

You might be interested in
Mrs. Baxter deposits $2000 in an account that earns 5% interest. How much is Mrs. Baxter's investment worth after 8 years
Trava [24]

Answer:

2954.91088758

Step-by-step explanation:

exact answer

6 0
3 years ago
How do I find the symmetry
Novay_Z [31]
Symmetry is the same as the one side of the graph but it is fliped on the X-axis
3 0
3 years ago
CAN SOMEONE SOLVE NUMBER 4 FOR ME? ILL GIVE BRAINLIEST
kirza4 [7]

Answer:

Ms. sim is not correct

Step-by-step explanation:

Rectangular Prism A

4 x 5 x 6 =

4 x 5 = 20

20 x 6 = 120 cm cubed

Rectangular Prism B

3 x 7 x 6 =

3 x 7 = 21

21 x 6 = 126

5 0
3 years ago
Read 2 more answers
How would you write out 3 x 6 + 7 x 4 = 46?
aleksandrvk [35]

Answer:

dceoi  hchis hurhgj

Step-by-step explanatiicdeon:

4 0
3 years ago
I need help with math if you don't know the answer get out of the question and don't answer it and give the wrong answer or some
Butoxors [25]

Answer:for the first one: 154.5852

Step-by-step explanation:

720 devided by 4 is 180

180 devided by 7 is 25.7142

so 25.7142x6=154.2852

so depending on what year your in, write the remainder or dont :)

~

120 devided by 5 is 24

thats all I know I tried w question 2 but it hurts mah brain, especially cuz I have *mental disorder* so its hard to focus aha- sorry

3 0
3 years ago
Other questions:
  • What's the ratio 48:30
    11·1 answer
  • Hose 1 in June took 45 mins to fill a pool of height of 20 inches and length 110 inches. Hose 2 in July took 15 mins to fill the
    10·1 answer
  • Can someone explain how I do these please ?
    7·2 answers
  • Johnny Mac's sporting Goods bought a baseball glove from Rawlins sporting Goods for $66.00, They want to mark up the glove 70% o
    13·1 answer
  • Find the value of y.<br> 18
    15·1 answer
  • Shawn picked some vegetables from his garden.he picked 2.234 pounds of corn 2.205 pounds of tomatoes and 2.25 pounds of potatoes
    6·1 answer
  • There u go you're all set and there's more to come thank you so much
    13·1 answer
  • Please please help me on this i will be your friend and message you also
    15·1 answer
  • Plz whoever has the best answer i'll give brainliest.
    11·1 answer
  • Please help me please
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!