Katie runs 3 miles in 28 minutes. At this pace, how long will it take her to run 13.1 miles? Round to the nearest minute.
2 answers:
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Answer:
He subtracted -5 from both sides, not -6
Step-by-step explanation:
The inequality that we have to solve in this problem is
To solve the inequality, we proceed as follows:
1)
First, we isolate the term in x. To do that, we add -6 on both sides of the inequality, and we find:
So, this is now the new inequality.
2)
Then, we divide both sides of the equation by 5; we get:
3)
Finally, we change sign to the inequality, so we get:
So, the student's error is that he subtracted -5 from both sides, not -6.