sven has concluded that he should spend 5 minutes or more on each scale. is this correct ?if not, what mistake did he make? then solve for the correct answer
Answers
Answered by
1
The correct inequality should have been 60-5t ≥ 35, and the solution should have been t ≤ 3.
Description:
He has 60 minutes total to practice. He has 5 skills to spend an unknown amount of time, t, on; this gives us 5t. With the time left over from these skills, he will play songs. He wants this to be at least 35; this means greater than or equal to 35. This gives us the inequality
60-5t ≥ 35
To solve this, first subtract 60 from each side:
60-5t-60 ≥ 35-60
-5t ≥ - 15
Divide each side by -5 (remember, when you divide an inequality by a negative number, you must flip the symbol):
-5t/-5 ≥ -15/-5
t ≤ 3
This means he should spend 3 minutes or less on each skill.
Similar questions