Question

question
determine the value of y, if x is 81.
( y = sqrt{x} + 9 )
answer
y =

Explanation:

Step1: Substitute x with 81

We know \( x = 81 \), so substitute \( x \) into the equation \( y=\sqrt{x}+9 \). We get \( y=\sqrt{81}+9 \).

Step2: Calculate the square root

The square root of 81 is 9, since \( 9\times9 = 81 \). So now the equation becomes \( y = 9 + 9 \).

Step3: Add the numbers

Adding 9 and 9 gives us 18. So \( y = 18 \).

Answer:

18