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
kow [346]
3 years ago
11

I will give you the brainlessest if you awnser the following plz and thank you so much

Mathematics
1 answer:
kirill115 [55]3 years ago
8 0
2. x + y = 82
    x - y = 24
  ---------------add
    2x = 106
      x = 53
 
   x + y = 82
   53 + y = 82
   y = 82 - 53
   y = 29

   solution is : (53,29)
=======================
3. y = 2x
    y = 4x + 6
    
    2x = 4x + 6
    2x - 4x = 6
    -2x = 6
     x = -3

    y = 2x
    y = 2(-3)
    y = -6

    solution is (-3,-6)
========================
4. 5x + 8y = -29
    7x - 2y = -67...multiply by 4
   ----------------
    5x + 8y = -29
   28x - 8y = - 268 ..result of multiplying by 4
  -----------------add
   33x = - 297
      x = - 9

   5x + 8y = -29
   5(-9) + 8y = -29
    -45 + 8y = -29
   8y = -29 + 45
   8y = 16
   y = 2

   solution is : (-9,2)
=======================
5. y = -4x + 6
    y = -5x - 4

    -4x + 6 = -5x - 4
    -4x + 5x = -4 - 6
     x = -10

    y = -4x + 6
    y = -4(-10) + 6
    y = 40 + 6
    y = 46

   solution is (-10,46)
=========================
6. H(m) = 2m + 12
    H(m) = 3m + 10
=========================
7. -8x + 4y > -52
    4y > 8x - 52
     y > 2x - 13 <==
=========================
8. 3x - y = 28
    3x + y = 14
   ---------------add
    6x = 42
     x = 7

   3x - y = 28
   3(7) - y = 28
   21 - y = 28
   -y = 28 - 21
   -y = 7
    y = -7

solution is (7,-7)
=====================
10. 5x - 5y > 70
      -5y > -5x + 70
       y < x - 14 <==
=====================
11. sorry...dont know
=====================
12. y = 4x + 4
      y = -3x - 3

     4x + 4 = -3x - 3
     4x + 3x = -3 - 4
     7x = -7
     x = -1

     y = 4x + 4
     y = 4(-1) + 4
     y = 0

solution is (-1,0)
=======================
13. -12x - 2y > - 42
       -2y > 12x - 42
        y < -6x + 21 <==
=======================
14. -5x + 2y = 9
       3x + 5y = 7

solution is (-1,2)
========================
15. 3x + 6y = -2
     15x + 30y = -10....divide by 5 to reduce = 3x + 6y = -2
     is the same line....infinite solutions
========================
1. (the graph).....y < = 3x - 4....3rd one
========================
9. (2nd graph)....y < = -3x + 4....last one
You might be interested in
The compound interest on a certain sum of money for 2 years is $208 and the simple interest for the same time at the same rate i
dlinn [17]
The answer is 208+200=408
7 0
2 years ago
The human body consist 1/10 hydrogen 16/25 oxygen 1/5 carbon
JulsSmile [24]

Answer:

ok? whats the question Imao

Step-by-step explanation:

7 0
3 years ago
Will mark brainliest!<br> Solve!<br> 9x +25+3x = 34 + 54<br> HELP!!!
Salsk061 [2.6K]

Answer:

9x + 25 + 3x = 34 + 54

9x + 3x = 12x

34 + 54 = 88

12x + 25 = 88

      - 25    - 25

12x = 63

<em><u>x = 5.25</u></em>

7 0
3 years ago
Read 2 more answers
The price of one gallon of milk has increased from $3.24 to $4.05. What us the percentage in increase?
dalvyx [7]
The percentage increase is 25%


8 0
3 years ago
Which is an equation for the line with a y -intercept of zero and a slope of 5?
Vitek1552 [10]

Answer:

y = 5x

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • which has the greater volume: a 4 meter cube or a rectangular solid that that is 8 meters long, 2 meters wide and 2 meters high
    12·2 answers
  • The original blueprint of a concrete patio has a scale ofmath2inches=3feet. Victoria wants to make a new blueprint of the patio
    13·1 answer
  • Use the Babylonian method to estimate the square root of 107 to the nearest tenth. 10.2 10.3 10.5 10.4
    15·1 answer
  • Please help! Name an angle adjacent and congruent to angle AOC ( diagram in picture)
    12·1 answer
  • |2x-3|=5<br><br> Absolute value
    13·2 answers
  • Cali bought a sweater priced a $60. If the sales tax is 9% what is the total purchase price of the sweater?
    13·1 answer
  • Help me out please I don’t understand?
    14·1 answer
  • Camillo estimates the weight of his dog. The veterinarian says that the dog weighs 84 pounds. The percent error in Camillo's est
    12·1 answer
  • A wire is attached to the top of a tower that is 100 feet tall. The wire is attached to the ground 40 feet of the tower What is
    13·1 answer
  • Mary is buying tickets for a movie.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!