Which inequality represents this sentence?



Seven plus five is greater than six plus two.


A$7+5>6+2$
B$7+5 \geq 6+2$
C$7+5<6+2$
D$7+5 \leqslant 6+2$

Verified Answer :

  • Break the sentence into components: 'Seven plus five' becomes \(7+5\), 'is greater than' becomes \(>\), and 'six plus two' becomes \(6+2\).
  • Combine these components to form the inequality \(7+5 > 6+2\).
  • Verify the expression by calculating the sums: \(12 > 8\).
  • Select the matching option from the list: \(\boxed{7+5 > 6+2}\).

Explanation

  1. Analyzing and Translating the Statement

The problem asks us to translate the English sentence "Seven plus five is greater than six plus two" into a mathematical inequality. To do this, we break the sentence down into its individual components. 'Seven' is the number 7, 'plus' is the addition operator '+', and 'five' is the number 5. Therefore, the phrase 'Seven plus five' represents the mathematical expression \(7 + 5\). Similarly, 'six' is 6, 'plus' is '+', and 'two' is 2, so 'six plus two' represents the expression \(6 + 2\). The phrase 'is greater than' translates to the inequality symbol '>'. Combining these parts, we get the mathematical statement \(7 + 5 > 6 + 2\).

  1. Verifying the Inequality

To confirm our translation is correct, we can evaluate both sides of the inequality. The left side is \(7 + 5\), which equals 12. The right side is \(6 + 2\), which equals 8. Since 12 is indeed greater than 8, the inequality \(12 > 8\) is a true statement. This confirms that our translation \(7 + 5 > 6 + 2\) accurately reflects the meaning of the given sentence.

  1. Selecting the Correct Option

Comparing our constructed inequality \(7 + 5 > 6 + 2\) with the provided options:

  • \(7+5 > 6+2\)
  • \(7+5 \geq 6+2\)
  • \(7+5 < 6+2\)
  • \(7+5 \leqslant 6+2\)

We can see that the first option matches our translation. Therefore, the correct representation for the sentence is \(7+5 > 6+2\).

Examples

Mathematical inequalities are fundamental in everyday decision-making, helping us compare quantities to determine the best choice. For instance, if you have \$10 and want to buy a snack that costs \$7 and a drink that costs \$5, you can compare the total cost (\(\$12\)) with the money you have (\(\$10\)) using the inequality \(\$12 > \$10\), which tells you that you do not have enough money. Understanding how to translate descriptive statements into mathematical inequalities allows for clear, logical analysis in real-world scenarios like budgeting, resource allocation, and logistics.