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NISA [10]
3 years ago
14

Which equation results from taking the square root of both sides (x-9)^2=81

Mathematics
2 answers:
dezoksy [38]3 years ago
7 0
(x-9)^2=81\\\\\sqrt{(x-9)^2}=\sqrt{81}\\\\|x-9|=9\iff x-9=9\ \vee\ x-9=-9\ \ \ |+9\\\\x=19\ \vee\ x=0
mestny [16]3 years ago
3 0
\bf (x-9)^2=81\implies \sqrt{(x-9)^2}=\sqrt{81}\implies x-9=\pm \sqrt{81}
\\\\\\
x-9=\pm 9\implies x=\pm 9+9
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Step-by-step explanation:

From the question,

The elevation of the submarine changes by -3/8 mile after each exploration.

To determine the number of explorations it will take for the submarine's elevation to have changed by -3/2 miles, we will divide -3/2 miles by the number of miles the elevation of the submarine changes per exploration (that is,  -3/8 mile),

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