Respuesta :

samueonuoha479

[tex]9) s^{2}=81 \\s=\sqrt{81} ,s=-\sqrt{81} \\\sqrt{81}=9\\-\sqrt{81} =-9\\s=9,s=-9[/tex]

[tex]12) r=\frac{12}{13}, r=-\frac{12}{13} \\\\11) d=\frac{1}{10} ,d=-\frac{1}{10}[/tex]

Step-by-step explanation:

Its all about the square root I believe

sophcatdevils

Answer:

9. 9

10. 6

11. 0.01

12. 0.923 (round to whatever you are supposed to)

1. 2 and 2.2

2. 4 and 4.2

3. 6 and 6.4

Step-by-step explanation:

9. isolate s by finding the square root of both sides (sqrt of 81=9)

10. do the same thing as 9 (sqrt 36=6)

11. same as 9 + 10 (sqrt of 1/100 = 0.01)

12. same as 9+10+11 (sqrt of 144/169=0.923)

1. find the square root of 5 then round

2. find the square root of 18 then round

3. find the square root of 41 then round

I hope this helps!

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