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
Yanka [14]
3 years ago
10

Solve the system by substitution. 2x - y = -3, 2x-2y = -2

Mathematics
1 answer:
Sonja [21]3 years ago
5 0

Answer:// Solve equation [1] for the variable  y

 [1]    y = 2x - 3

// Plug this in for variable  y  in equation [2]

  [2]    -2•(2x-3) + 2x = 2

  [2]     - 2x = -4

// Solve equation [2] for the variable  x

  [2]    2x = 4

  [2]    x = 2

// By now we know this much :// Solve equation [1] for the variable  y

 [1]    y = 2x - 3

// Plug this in for variable  y  in equation [2]

  [2]    -2•(2x-3) + 2x = 2

  [2]     - 2x = -4

// Solve equation [2] for the variable  x

  [2]    2x = 4

  [2]    x = 2

// By now we know this much :

   y = 2x-3

   x = 2

// Use the  x  value to solve for  y

   y = 2(2)-3 = 1

   y = 2x-3

   x = 2

// Use the  x  value to solve for  y

   y = 2(2)-3 = 1

Step-by-step explanation:

You might be interested in
Solve for x.<br><br> 4(x + 2) = 48<br><br> x = 6<br> x = 7<br> x = 10<br> x = 14
Mrac [35]

Answer:

x = 10

Step-by-step explanation:

plug and chug using a calculator

4(10+2)

10+2= 12 x 4=48

7 0
3 years ago
Lana bought a bamboo plant that was
cestrela7 [59]

Step-by-step explanation:

9 1/5=46/5 ; 7 1/2=15/2

common denominator is 10

46/5-15/2=( 92-75)/10= 17/10= 1 7/10 feet= 1.7 feet

4 0
3 years ago
What is the answer to 2 1/3 x 9=
DanielleElmas [232]
2  1/3 x 9=(2+1/3) * 9=(2*3+1)/3  * 9=7/3  * 9=63/3=21

Answer: 2  1/3  x 9  = 21
4 0
3 years ago
An airplane descends 2.2 miles to an elevation of 6.55 miles. Find the elevation of the plane before its descent.The initial ele
Alla [95]
Answer: 8.75 Miles

Explanation: In this scenario, you want to add 2.2 to 6.55 to get the initial elevation, and by completing the equation 6.55 + 2.2, you would get your answer of 8.75
3 0
3 years ago
Read 2 more answers
Fertilization takes place when: a sperm cell joins an egg a sperm cell starts developing an egg starts growing an egg is laid
andreev551 [17]

Answer:

1st option: when a sperm joins an egg

Step-by-step explanation:

A sperm will be accepted into the egg, and fertalize it

3 0
3 years ago
Other questions:
  • Given a random sample of 85 people attending a workshop, 63 of the respondents said the workshop was useful. What is the sample
    7·2 answers
  • Y=x+5 what is the slope?
    11·2 answers
  • Put these in size order 52,25,5,22,2,50
    15·2 answers
  • The table and graph both represent
    12·1 answer
  • 3.
    10·1 answer
  • <img src="https://tex.z-dn.net/?f=2y%20%3D%20xm%20%2B%20%28%20%5Csqrt%7Bw%20%2B%202gm%7D%20%29%20%5Cdiv%20%7Bw%7D%5E%7B2%7D%20"
    13·1 answer
  • A gorilla needs to eat at least 40 pounds of food each day. The zoo feeds the gorilla using canisters that contain 4 pounds of f
    11·1 answer
  • Combine the following: a+a+a+b+b+c<br> i really need help <br> help me plzzzzzzzzz
    14·1 answer
  • What is 24 15 and 4 as a mixed number
    13·1 answer
  • Una persona nacio en el año 2 antes de cristo y se caso a los 25 años <br> En que año se caso?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!