Join IDNLearn.com and become part of a knowledge-sharing community that thrives on curiosity. Ask your questions and receive detailed and reliable answers from our experienced and knowledgeable community members.

Julian needs to spend at least 7 hours each week practicing the drums. He has already practiced [tex]$5 \frac{1}{3}$[/tex] hours this week. He wants to split the remaining practice time evenly between the next 2 days of the week. Write an inequality to determine the minimum number of hours he needs to practice on each of the 2 days.

A. [tex]$5 \frac{1}{3} + 2x \leq 7$[/tex]
B. [tex]$5 \frac{1}{3} x + 2 \leq 7$[/tex]
C. [tex]$5 \frac{1}{3} x + 2 \geq 7$[/tex]
D. [tex]$5 \frac{1}{3} + 2x \geq 7$[/tex]


Sagot :

Let's break this down step-by-step to find the correct inequality and the minimum number of hours Julian needs to practice each remaining day:

1. Understand the given data:
- Julian has already practiced \(5 \frac{1}{3}\) hours this week.
- He wants to practice at least 7 hours in total for the week.
- He has 2 days left to reach his minimum practice goal.

2. Convert mixed number to improper fraction:
[tex]\[ 5 \frac{1}{3} = 5 + \frac{1}{3} = \frac{15}{3} + \frac{1}{3} = \frac{16}{3} \][/tex]

3. Calculate the remaining practice hours needed:
[tex]\[ \text{Minimum total hours needed} - \text{Hours already practiced} = 7 - 5 \frac{1}{3} \][/tex]
[tex]\[ 7 - \frac{16}{3} = \frac{21}{3} - \frac{16}{3} = \frac{5}{3} \approx 1.67 \text{ hours} \][/tex]

4. Set up the inequality for the remaining 2 days:
Let \(x\) be the number of hours Julian needs to practice each of the next two days. Therefore, the total practice time for those 2 days is \(2x\).

The inequality representing the total practice time is:
[tex]\[ 5 \frac{1}{3} + 2x \geq 7 \][/tex]

Let's rewrite it using the improper fraction:
[tex]\[ \frac{16}{3} + 2x \geq 7 \][/tex]

5. Solve the inequality:
[tex]\[ \frac{16}{3} + 2x \geq 7 \][/tex]
First, multiply both sides by 3 to clear the fraction:
[tex]\[ 16 + 6x \geq 21 \][/tex]
Subtract 16 from both sides:
[tex]\[ 6x \geq 5 \][/tex]
Divide by 6:
[tex]\[ x \geq \frac{5}{6} \approx 0.83 \text{ hours} \][/tex]

So, Julian needs to practice at least \(\boxed{0.83}\) hours each of the next 2 days to meet his 7-hour weekly goal.

Therefore, the correct inequality from the given options is:
[tex]\[ 5 \frac{1}{3} + 2x \geq 7 \][/tex]
We greatly appreciate every question and answer you provide. Keep engaging and finding the best solutions. This community is the perfect place to learn and grow together. Thank you for choosing IDNLearn.com. We’re dedicated to providing clear answers, so visit us again for more solutions.