Question

Evaluate the two sums and determine which statement is true. Enter the correct number associated with your response.

Column A Column B
0.5 +3 /4 √3 (radical thing on top of the 3) +2/5


Statement #1: Only Column A has a rational sum.

Statement #2: Only Column B has a rational sum.

Statement #3: Column A and Column B both have rational sums.

(1 point)
The simplified values of both columns indicate that Statement # ( )is true.

1 answer

Let's evaluate both sums in Column A and Column B.

Column A: \[ 0.5 + \frac{3}{4} \]

First, let's convert \(0.5\) to a fraction: \[ 0.5 = \frac{1}{2} \]

Now we have: \[ \frac{1}{2} + \frac{3}{4} \]

To add these fractions, we need a common denominator. The least common denominator (LCD) of \(2\) and \(4\) is \(4\): \[ \frac{1}{2} = \frac{2}{4} \]

Now, we can add the fractions: \[ \frac{2}{4} + \frac{3}{4} = \frac{2 + 3}{4} = \frac{5}{4} \]

So, the sum for Column A is: \[ \frac{5}{4}, \text{ which is rational}. \]


Column B: \[ \sqrt{3} + \frac{2}{5} \]

The term \(\sqrt{3}\) is an irrational number. \( \frac{2}{5} \) is a rational number. The sum of a rational and an irrational number is always irrational. Therefore: \[ \sqrt{3} + \frac{2}{5} \text{ is irrational}. \]


Now we can summarize the results:

  • Column A has the sum \( \frac{5}{4} \) (rational).
  • Column B has the sum \( \sqrt{3} + \frac{2}{5} \) (irrational).

Reviewing the statements:

  • Statement #1: Only Column A has a rational sum. (True)
  • Statement #2: Only Column B has a rational sum. (False)
  • Statement #3: Column A and Column B both have rational sums. (False)

Thus, the correct statement is: Statement #1 is true.

The final answer is: Statement # (1) is true.