Question

which is an irrational number?

A.
B.
C.
D.

Answer 1

what are the options?

Answer 2

hold on

Answer 3

d. the others are all even numbers.
A. 1
B. 3
C. 7
D. 8.94427191.. it isn't a perfect number.
therefore, the irrational number is √80 or D.

Answer 4

I knew it

Answer 5

thax, can you help me with a few more

Answer 6

:) you were correct!

Answer 7

sure!

Answer 8

thanks

Answer 9

What is the distance between point A and point B? Round to the nearest tenth.

Answer 10

A.
2.2 units







B.
4.6 units







C.
8.5 units







D.
9.1 units

Answer 11

http://static.k12.com/calms_media/media/243500_244000/243680/1/1769d475256a6d52dc451f9a2f228e0b7827c06a/VHS_PA_S2_04_L211_L312_UT_Q4.gif

Answer 12

where do point a and point b stand?

Answer 13

right In the link

Answer 14

okay, so you will be using the distance formula. do you know what that is?

Answer 15

no

Answer 16

\[d=\sqrt{(x _{2}-x _{1})^{2}+(y _{2}-y _{1})^{2}}\]

Answer 17

so, let's use A as the scripted 1's. and B as the scripted 2's.
That puts the equation at:
\[d=\sqrt{(5--3)^{2}+(2--1)^{2}}\]

Answer 18

now solve the parenthesis. (5- -3) equals what?
and what does (2- -1) equal?

Answer 19

2 and 1?

Answer 20

close..
\[5--3 \] is the same as saying 5+3 because you are subtracting a negative, I remember it as just changing the signs from "subtracting a negative" to plus a positive"
This means we are at (5+3) and... what does (2--1) become?

Answer 21

(2+1)?

Answer 22

correct!

Now, we have:
\[d=\sqrt{(8)^{2}+(3)^{2}}\]
so what is 8 squared + 3 squared?

Answer 23

73

Answer 24

this is a test, so ur relly helping

Answer 25

correct! and the square root of 73 is...?

Answer 26

8.5

Answer 27

can I put them all in there, ill tell all my other fans on my other username to fan u!!! :D

Answer 28

sure, and you don't have to do that. I'm just happy to help! :)

Answer 29

thanks

Answer 30

http://static.k12.com/packages4/files/media/mathml_bda8343fe3cb34e3c1baeb47e8bbc88331b21958_1.gif

Answer 31

A.










B.










C.










D.

Answer 32

A.6/121
B.18/10
C.6/11
D.18/11

Answer 33

look at it this way.. \[\sqrt{36}/\sqrt{121}\]
What's the √36?
What's the √121?
Put them in a fraction.. and BAM!