Two college algebra questions

[justin123]

Hello. I have to problems i am stuck on. the Solutions must be answered into a webassign program that is very specific about symbols and notation. I beleive my answers are correct. looking for someone to check my notation or correct. thank you. must be set in interval notation

problem 1:

1

7

x < −1 or 2x > 0
answer 1: (-infinity,-2)U(0,infinity)


problem 2:

2

3

x > 4 or 4x < −24
answer 2:

thank you!

 

[stapel]

problem 1:

1

7

x < −1 or 2x > 0
answer 1: (-infinity,-2)U(0,infinity)

How does the fraction one-seventh relate to the two inequalities? What were the instructions for the exercise? What are you supposed to be doing with the fraction and/or inequalites? How did you arrive at your solution?

problem 2:

2

3

x > 4 or 4x < −24
answer 2:

How does the fraction two-thirds relate to the two inequalities? What were the instructions for the exercise? What are you supposed to be doing with the fraction and/or inequalites? How did you arrive at your solution?

 

[HallsofIvy]

Hello. I have to problems i am stuck on. the Solutions must be answered into a webassign program that is very specific about symbols and notation. I beleive my answers are correct. looking for someone to check my notation or correct. thank you. must be set in interval notation

problem 1:

1

7

x < −1 or 2x > 0
answer 1: (-infinity,-2)U(0,infinity)

It's impossible to tell whether or not your answers are correct without knowing what the question was!
What was the question? What does "1/7", if that is what you meant, have to do with the problem?

In any case, the inequality x< -1 would be represented in interval notation as (-infinity, -1), not -2. I have to believe that was a typo.

problem 2:

2

3

x > 4 or 4x < −24
answer 2:

thank you!

Again, what was the question? And, here, we can't say if your interval is correct because you haven't shown an answer!

 

[stapel]

Also, what is the significance of your formatting some of the characters in red, rather than the default black? Thank you.