Question

A.
8 and 9

B.
9 and 10

C.
10 and 11

D.
84 and 85

Answer 1

http://static.k12.com/packages4/files/media/mathml_4797873e8404af5f073873db0480fca48a08bbad_1.gif

Answer 2

i will fan and give a medal

Answer 3

First you have to find what number when squared is the narrowest range of \(\sqrt{85}\)

Answer 4

For this, try \[\sqrt{84}\]
That doesn't give an integer
try \[\sqrt{83}\]
That doesn't give as well, how about
\[\sqrt{81}\]
This is equal to 9, so 9 will be lower limit of \(\sqrt{84}\)

Answer 5

The upper boundary you'll need to test is \(\sqrt{86},\sqrt{87},\sqrt{88},\sqrt{89}...\)
Try until you got an integer

Answer 6

I think the closest you can get is \(\sqrt{100}\) which is 10, so the answer is B

Answer 7

What is the value of x?