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
Roman55 [17]
3 years ago
13

Solve the system of equations using the substitution method.

Mathematics
2 answers:
Minchanka [31]3 years ago
4 0

Answer:

y =  - 2 \\ x =  - 2

Step-by-step explanation:

<h3>Question</h3>

- 5x - 3y = 16  \:  \:  =  > 1 \\ y = x =  > 2

Now you can write the 1st equation like this.

- 5x - 3y = 16 \\ x = y \\ so \:  \: you \:  \:  \: can \:  \: write \\  - 5y -  3y = 16  \:  \:  \:  =  > 3

Now simply Solve the 3rd equation

- 5y - 3y = 16 \\  - 8y = 16 \\  \frac{ - 8y}{ - 8}  =  \frac{16}{ - 8}  \\ y =  - 2

<em>Now</em><em> </em><em>replac</em><em>e</em><em> </em><em>y</em><em> </em><em>as</em><em> </em><em>2</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>2</em><em>n</em><em>d</em><em> </em><em>equation</em><em> </em><em>like</em><em> </em><em>this</em>

<em>y = x \\  - 2 =  - 2</em>

<em>Now</em><em> </em><em>let's</em><em> </em><em>check</em><em> </em><em>whether</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>correct</em><em> </em><em>or</em><em> </em><em>wrong</em>

<em>- 5x - 3y = 16 \\   -  5 \times  - 2 - 3  \times  - 2 = 16 \\ 10 + 6 = 16 \\ 16 = 16</em>

<em>Yes</em><em>,</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>correct</em>

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em> </em><em>you</em><em> </em><em>!</em><em>!</em>

Galina-37 [17]3 years ago
3 0

Answer:

x = y = -2

Step-by-step explanation:

Hope this helps

You might be interested in
Solve for a. ​ 1/3(21−3a)=6−a​ a.−1 b.0 c.no solution d.all real numbers
kifflom [539]
1/3(21 - 3a) = 6 - a
7 - a = 6 - a
7 = 6

Therefore, the equation has no solution.
3 0
3 years ago
The complement of an angle is 25. What is the measure of an angle
Inessa [10]
The complement of an acute angle A in degrees is 90 - A. So if the complement is 25 degrees, the angle would be 90 - 25 = 65 degrees.
8 0
3 years ago
Would a scale factor of -2 be considered an expansion or a contraction?
LekaFEV [45]
Scale factors of negative numbers are contractions

scale factors of numbers greater then 1 are expansions
scale factors of numbers greater then 0 but less then 1 are contractions
6 0
3 years ago
Do we have to know all the answers to the problems
musickatia [10]

Answer: Not quite

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
This problem makes me wanna cry
lyudmila [28]

Answer:

k=45

Step-by-step explanation:

its an isosceles triangle, so k=45

to check it, 45+45+90=180

6 0
3 years ago
Other questions:
  • Relationship between rational numbers and ratios
    15·1 answer
  • Geometry help please! this is my last try! The two triangles below are similar. What is the similarity ratio of ΔABC to ΔDEF?
    11·1 answer
  • How do you graph a negative slope when it’s in slope intercept form
    13·1 answer
  • Help i will mark you as brainliest if u get it correct
    13·2 answers
  • Leah packs 103 chocolate cake pieces in boxes to distribute to her classmates. How many boxes does she pack with 5 pieces in eac
    11·1 answer
  • If 1 16 oz can cost. $1 how much is 8 40oz cans
    11·1 answer
  • How many oranges are in a crate if the price of a crate of oranges is $1.60 and the price of oranges is $0.20 per pound and ther
    5·1 answer
  • Kara is training for a 5 kilometer race. On the first day, she runs 0.75 kilometer What percent of the total distance does she r
    6·1 answer
  • How long was Anthony's family gone? Complete the explanation of how the answer can be found. To find the answer, count hour(s) f
    14·1 answer
  • Please help with 1234, due tonight would mean everything! Will give brainly!!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!