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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

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

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

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

• 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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