Answer :

Let's break down the computation for the given expression step-by-step.

The expression we need to solve is:
[tex]\[ \sqrt{\frac{9}{89} + \frac{16}{49}} + \left(\frac{2}{5} - \frac{1}{2}\right) + \frac{7}{5} \][/tex]

To solve this, we need to compute each part individually.

1. Calculate [tex]\(\frac{9}{89}\)[/tex]:
[tex]\[ \frac{9}{89} \approx 0.10112359550561797 \][/tex]

2. Calculate [tex]\(\frac{16}{49}\)[/tex]:
[tex]\[ \frac{16}{49} \approx 0.32653061224489793 \][/tex]

3. Add these two values:
[tex]\[ \frac{9}{89} + \frac{16}{49} \approx 0.10112359550561797 + 0.32653061224489793 = 0.4276542077505159 \][/tex]

4. Take the square root of the sum:
[tex]\[ \sqrt{0.4276542077505159} \approx 0.6539527565126673 \][/tex]

Next, compute the subtraction in the middle term:

1. Calculate [tex]\(\frac{2}{5}\)[/tex]:
[tex]\[ \frac{2}{5} = 0.4 \][/tex]

2. Calculate [tex]\(\frac{1}{2}\)[/tex]:
[tex]\[ \frac{1}{2} = 0.5 \][/tex]

3. Subtract the two values:
[tex]\[ \frac{2}{5} - \frac{1}{2} = 0.4 - 0.5 = -0.1 \][/tex]

Finally, compute the last term:
[tex]\[ \frac{7}{5} = 1.4 \][/tex]

Combine all parts together:
[tex]\[ \sqrt{\frac{9}{89} + \frac{16}{49}} + \left(\frac{2}{5} - \frac{1}{2}\right) + \frac{7}{5} \approx 0.6539527565126673 + (-0.1) + 1.4 \][/tex]

Add the values to find the final result:
[tex]\[ 0.6539527565126673 - 0.1 + 1.4 = 1.9539527565126673 \][/tex]

Therefore, the result is:
[tex]\[ \boxed{1.9539527565126673} \][/tex]