Question

Help lol i dont get it

Answer 1

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

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!

Answer 2

`9) s^(2)=81 \\s=√(81) ,s=-√(81) \\√(81)=9\\-√(81) =-9\\s=9,s=-9`

`12) r=(12)/(13), r=-(12)/(13) \\\\11) d=(1)/(10) ,d=-(1)/(10)`

Explanation:

Its all about the square root I believe