Question

Check my answer please?
Find the midpoint of CM C(-5,7) M(-2,1).
My answer is; the midpoint is (-3.5,4)

Answer 1

you are correct

Answer 2

nice job

Answer 3

thank you! :D

Answer 4

you're welcome

Answer 5

may I ask, I've forgotten how to find a length segment, which steps to use, for example on this problem I did (-2+-5/2,1+7/2)=(-7/2,8/2)=(-3.5,4) as in (x1+x2/2,y1+y2/2)=(x/2,y/2)=(x,y)
if you can help me what's the equation to find a length segment? on this? http://prntscr.com/3mmcix

Answer 6

are you familiar with the pythagorean theorem?

Answer 7

yes so far I've figured out (AB)^2=5^2+2^2, (AB)^2=29 but how do I simplify it?

Answer 8

you want the length of AB

so you want to know the value of AB

Answer 9

which means you need to completely isolate AB

Answer 10

how do you do that?

Answer 11

well that's the step I've forgotten

Answer 12

what operation undoes squaring?

Answer 13

square root? o.O

Answer 14

so you apply the square root to both sides

Answer 15

the square root of AB^2 is just AB (this works since AB > 0)

Answer 16

I might just sound stupid right now but I did \[\sqrt{29}\] and the answer came up was 5.3 it doesn't seem right to me

Answer 17

it's more like 5.3851648 which rounds to 5.4

so you have the right idea

Answer 18

so 5.4 is the right answer?

Answer 19

my question is the steps I did, was it correct?

Answer 20

yes, you apply the square root to both sides to get

\[\Large AB = \sqrt{29}\]

Answer 21

then you use a calculator to get this approximation

\[\Large AB \approx 5.3851648071345\]

Answer 22

and you round however you need to

Answer 23

alrighty! thank you very much once again, you've been a big help to me :D

Answer 24

you're welcome and I'm glad to be of help