Respuesta :

nancygoyal

Answer:

-7

Step-by-step explanation:

[tex](18 \div 9) - \sqrt{81 } \\ \\ 2 - 9 \\ - 7[/tex]

AlgebraicAardvark

With the order of operations, you must do the division (18/9) first.  Then do the square root.  Then do the subtraction.

[tex]\begin{aligned}\dfrac{18}{9} - \sqrt{81} &= 2-\sqrt{81}\\[0.5em]&=2-9\\[0.5em]&=-7\end{aligned}[/tex]