## Ingiee0118 3 years ago Please help ... Evaluate : Sqr Rt Of 81 + 3^2 - 6 - Sqr Rt Of 16 .....

1. lgbasallote

what is $$\sqrt{81}$$?

2. lgbasallote

what do you think is the value of that?

3. LemuelPogi

its 5 xD

4. LemuelPogi

9-4 = 5 ow im wrong 3^2 is not equal to 6 so its $\sqrt{84} - \sqrt{16}$ I think its $2\sqrt{21} + 4$ I am not quite sure but it can be simplified the two will not exist and 4 will be 2

5. hal_stirrup

8

6. lgbasallote

?

7. lgbasallote

go on...keep shooting random guesses...im sure you'll hit the right one someday

8. hal_stirrup

$\sqrt{81}+3^2-6-\sqrt{16}$=9+9-6-4=8

9. hal_stirrup

if thats the question then the answer is 8 for sure.... :)

10. Ingiee0118

Thank you so muchh :) hal_stirrup :D

11. hal_stirrup

welcome @ngiee0118

12. hal_stirrup

@Ingiee0118

13. Ingiee0118

So your good at math ...? Can you help me with another question ? pleaseeeeeee .? :))

14. hal_stirrup

i can try

15. hal_stirrup

you can be my fan and so do i ?

16. Ingiee0118

Which set of line segments with the given lengths form a right triangle? A ) 9, 27, 81 B ) 10, 24, 38 C )14, 16, 22 D) 15, 36, 39

17. Ingiee0118

There i am a fan :)

18. hal_stirrup

nice

19. Ingiee0118

So can you help me with that question ?

20. hal_stirrup

its being some time since i did trig. i fine out.

21. Ingiee0118

Huh ...?

22. hal_stirrup

ok use pythagorean theorem, a^2 + b^2 = c^2

23. Ingiee0118

Gur ... Okay thankyou (:

24. hal_stirrup

25. hal_stirrup

here is how its done. A ) 9, 27, 81 let 9=a , b=27 and c=81 the pythagorean theorem, a^2 + b^2 = c^2 so plug in the values and see if a^2 + b^2=c^2 .

26. hal_stirrup

if this hold the you have the right answer. If not then try the B and c and D. THATS what i did and found out D IS the right answer

27. Ingiee0118

Thankyouu(: So much !

28. hal_stirrup

welcome. is that happy or sad face?

29. Ingiee0118

HAPPY (:

30. hal_stirrup

ok thats my happy face :)

31. Ingiee0118

:D