0,5√121+3√0,81

To simplify the expression 0,5√121+3√0,81, we first need to find the values of √121 and √0.81.

The square root of 121 is 11 because 11 x 11 = 121. The square root of 0.81 is 0.9 because 0.9 x 0.9 = 0.81.

Now we can substitute these values back into the expression:

0.5√121 + 3√0.81 = 0.5(11) + 3(0.9) = 5.5 + 2.7 = 8.2

Therefore, the simplified expression is 8.2.