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Question 1 Solve the system of equations by substitution. x + 2y = 18 4x + 3y = 27 (0, 9) (1, 8) (-9, 0) No Solution Question 2 Solve the system of...

Question 1
  1.  

    Solve the system of equations by substitution. 

    x  + 2y  = 18 

    4x + 3y  = 27


    (0, 9)

    (1, 8)

    (-9, 0)

    No Solution


 Question 2      

  1.  

    Solve the system of equations using elimination by addition:


      x -  5y   = 35 


     5x -  4y   = 28


    (1, -8)

    (7, 0)

    (1, -7)

    (0, -7)

 

  Question 3             
  1.  

    Solve the system of equations by substitution. 

    x + y = -11 

    x - y = -11 

     

    Please show your work for full credit. No credit given for correct answer without intermediate steps.


Question 4
  1.  

    Use the augmented matrix to solve the system: 

     0.4x1 + 0.9x2 = - 4.9 

         x1 - 0.3x2  =   0.5


    (-5, -1)

    (-1, -5)

    (-0.1, -0.5)

    (0, 0)


 Question 5      

  1.  

    A bag contains 5 red marbles, 6 blue marbles, and 2 green marbles. What is the probability of choosing a blue marble?

    6/13

    5/13

    6/11

    2/13

  

  Question 6             
  1.  

    A lottery game contains 28 balls numbered 1 through 28. What is the probability of choosing a ball numbered 28?

    1

    28

    1/28

    0


Question 7             
  1.  

    Two 6-sided dice are rolled. What is the probability the sum of the two numbers on the die will be 5?

     


    5/6

    8/9

    1/9

    4




Top Answer

1) (0,9) 2) (0,-7) 3)  x+y=-11 x-y=-11 x=y-11 plug... View the full answer

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Other Answers

Here is the solution... View the full answer

1 comment
  • 2) (0,-7) 3) x+y=-11 x-y=-11 x=y-11 plug in back y-11+y=-11 2y=0 y=0 x=y-11 =0-11 =-11 4) (-1,-5) 5) 6/13 6) 1/28 7) 1/9
    • princess_kim
    • Jul 20, 2016 at 1:11pm

Here is the explanation for... View the full answer

Que1) option a) is correct. (0,9) Que2) option d) is correct (0 , -7) Que3) add tow... View the full answer

4 comments
  • Que4) Option (-1 , -5) is correct.
    • MathMaster2018
    • Jul 20, 2016 at 1:12pm
  • Que5) option 6/13 is correct.
    • MathMaster2018
    • Jul 20, 2016 at 1:13pm
  • Que6) option 1/28 is correct.
    • MathMaster2018
    • Jul 20, 2016 at 1:14pm
  • Que7) option 1/9 is correct.
    • MathMaster2018
    • Jul 20, 2016 at 1:15pm

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