Evaluate the following.
let me know if its "not a real number"
-√81
√-16

Step-by-step explanation:

(1)

-√81 = -9 (although you could argue that it's ± 9, since 81 has two square roots:  9 and -9).  Real number.

(2) √(-16) is imaginary, and the value is i·4 (or -i·4).  Not a real number.

answer: my brother can figure it out, imma go get him so i can answer : ) edit: my brother is sleeping, sorry man

step-by-step explanation:

6. 104

7. 52/37

8. 2704

9. 140608

10. -52

11. |52|=52

12. 1/52

13. 156

14. 26

15. 40

16. 37

17. -364

18. 53 1/3

19. 50.96

20. 43 2/3

21. 78

22. 50.75

23. 47.63

24. 163.28

25. 10400

26. 338

27. 208

28. 2704 square inches

29. 312 square meters

30. don't know what its asking, tell me so i can tell you

31. 8490.56

32. 52 degrees would be an acute angle

33. 128 degrees

34. 20.8

35. 39

36. 208