Get expert insights and community-driven knowledge on IDNLearn.com. Discover in-depth answers from knowledgeable professionals, providing you with the information you need.
Sagot :
Let's go through each inequality step-by-step to find which one is solved by subtracting 5 from both sides and then dividing by 2.
### Option 1: [tex]\(2x - 5 = 15\)[/tex]
1. Start with the inequality:
[tex]\[ 2x - 5 = 15 \][/tex]
2. Add 5 to both sides to isolate the term involving [tex]\(x\)[/tex]:
[tex]\[ 2x - 5 + 5 = 15 + 5 \implies 2x = 20 \][/tex]
3. Divide both sides by 2 to solve for [tex]\(x\)[/tex]:
[tex]\[ \frac{2x}{2} = \frac{20}{2} \implies x = 10 \][/tex]
This equation does not match the criteria as we needed to subtract 5 first, but we actually added 5 in this case.
### Option 2: [tex]\(2x + 5 > 15\)[/tex]
1. Start with the inequality:
[tex]\[ 2x + 5 > 15 \][/tex]
2. Subtract 5 from both sides:
[tex]\[ 2x + 5 - 5 > 15 - 5 \implies 2x > 10 \][/tex]
3. Divide both sides by 2:
[tex]\[ \frac{2x}{2} > \frac{10}{2} \implies x > 5 \][/tex]
We subtracted 5 and then divided by 2, so this inequality fits the criteria.
### Option 3: [tex]\(2x + 5 = 15\)[/tex]
1. Start with the inequality:
[tex]\[ 2x + 5 = 15 \][/tex]
2. Subtract 5 from both sides:
[tex]\[ 2x + 5 - 5 = 15 - 5 \implies 2x = 10 \][/tex]
3. Divide both sides by 2:
[tex]\[ \frac{2x}{2} = \frac{10}{2} \implies x = 5 \][/tex]
This equation also involves subtracting 5 and dividing by 2, but it resolves into an equation [tex]\(x = 5\)[/tex] instead of an inequality.
### Option 4: [tex]\(2x - 5 > 15\)[/tex]
1. Start with the inequality:
[tex]\[ 2x - 5 > 15 \][/tex]
2. Add 5 to both sides to isolate the term involving [tex]\(x\)[/tex]:
[tex]\[ 2x - 5 + 5 > 15 + 5 \implies 2x > 20 \][/tex]
3. Divide both sides by 2 to solve for [tex]\(x\)[/tex]:
[tex]\[ \frac{2x}{2} > \frac{20}{2} \implies x > 10 \][/tex]
This inequality also fits the criteria as we subtracted 5 and then divided by 2.
### Conclusion
The given question asks for the inequality solved by subtracting 5 from both sides and then dividing by 2. Comparing the steps:
The correct answer is: [tex]\(2x - 5 > 15\)[/tex]
Thus, the inequality that is solved by subtracting 5 from both sides and then dividing by 2 is:
\[
\boxed{4}
### Option 1: [tex]\(2x - 5 = 15\)[/tex]
1. Start with the inequality:
[tex]\[ 2x - 5 = 15 \][/tex]
2. Add 5 to both sides to isolate the term involving [tex]\(x\)[/tex]:
[tex]\[ 2x - 5 + 5 = 15 + 5 \implies 2x = 20 \][/tex]
3. Divide both sides by 2 to solve for [tex]\(x\)[/tex]:
[tex]\[ \frac{2x}{2} = \frac{20}{2} \implies x = 10 \][/tex]
This equation does not match the criteria as we needed to subtract 5 first, but we actually added 5 in this case.
### Option 2: [tex]\(2x + 5 > 15\)[/tex]
1. Start with the inequality:
[tex]\[ 2x + 5 > 15 \][/tex]
2. Subtract 5 from both sides:
[tex]\[ 2x + 5 - 5 > 15 - 5 \implies 2x > 10 \][/tex]
3. Divide both sides by 2:
[tex]\[ \frac{2x}{2} > \frac{10}{2} \implies x > 5 \][/tex]
We subtracted 5 and then divided by 2, so this inequality fits the criteria.
### Option 3: [tex]\(2x + 5 = 15\)[/tex]
1. Start with the inequality:
[tex]\[ 2x + 5 = 15 \][/tex]
2. Subtract 5 from both sides:
[tex]\[ 2x + 5 - 5 = 15 - 5 \implies 2x = 10 \][/tex]
3. Divide both sides by 2:
[tex]\[ \frac{2x}{2} = \frac{10}{2} \implies x = 5 \][/tex]
This equation also involves subtracting 5 and dividing by 2, but it resolves into an equation [tex]\(x = 5\)[/tex] instead of an inequality.
### Option 4: [tex]\(2x - 5 > 15\)[/tex]
1. Start with the inequality:
[tex]\[ 2x - 5 > 15 \][/tex]
2. Add 5 to both sides to isolate the term involving [tex]\(x\)[/tex]:
[tex]\[ 2x - 5 + 5 > 15 + 5 \implies 2x > 20 \][/tex]
3. Divide both sides by 2 to solve for [tex]\(x\)[/tex]:
[tex]\[ \frac{2x}{2} > \frac{20}{2} \implies x > 10 \][/tex]
This inequality also fits the criteria as we subtracted 5 and then divided by 2.
### Conclusion
The given question asks for the inequality solved by subtracting 5 from both sides and then dividing by 2. Comparing the steps:
The correct answer is: [tex]\(2x - 5 > 15\)[/tex]
Thus, the inequality that is solved by subtracting 5 from both sides and then dividing by 2 is:
\[
\boxed{4}
We appreciate your contributions to this forum. Don't forget to check back for the latest answers. Keep asking, answering, and sharing useful information. Your search for answers ends at IDNLearn.com. Thanks for visiting, and we look forward to helping you again soon.