Question 11

3 / 3 pts

Solve for the variable.

8 = ( 5 X − 44 ) + 7

Correct!

Correct Answers

9 (with margin: 0)

 

Question 12

3 / 3 pts

Solve for the variable.
3d + 10 = -15 – 2d

Correct!

Correct Answers

-5 (with margin: 0)

 

Question 13

3 / 3 pts

Solve for the variable. 
-5(3Z + 2) = -11Z – 14

Correct!

Correct Answers

1 (with margin: 0)

 

Question 14

1 / 1 pts

Solve for the variable. Determine if there is one solution, infinitely many solutions, or no solution.
6k + 6 – 3k = -2 + 3k + 8

  

One Solution

 Correct!  

Infinitely Many Solutions

   

No Solution

 

 

Question 15

1 / 1 pts

Solve for the variable. Determine if there is one solution, infinitely many solutions, or no solution.
-3(-N – 5) = 3N + 18

  

One Solution

   

Infinitely Many Solutions

 Correct!  

No Solution

 

 

Question 16

2 / 2 pts

A train traveled a distance of D = 344 km (kilometers) for T = 4.8 hours at a constant rate. Use the formula
D = R · T
to find the speed (R) of the train in km per hour. Round your answer to the nearest tenth. Do not include the units in your answer.

Correct!

Correct Answer

71.7 margin of error +/- 0.05