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Mathematics 22 Online
OpenStudy (anonymous):

Help please

OpenStudy (dcolley):

with what

OpenStudy (anonymous):

Find the distance between the two points. Round to the nearest tenth if necessary. (8, 8), (12, 11) (1 point) 7 5 25 28

OpenStudy (anonymous):

I need help with a few other things, can you please stay and help me?

OpenStudy (dcolley):

what are the last four numbers for?

OpenStudy (anonymous):

those are the options for the answers

OpenStudy (anonymous):

?

OpenStudy (anonymous):

Here's more Find the distance between the two points. Round to the nearest tenth if necessary. (–2, –6), (3, 9) (1 point) 15.8 250 3.2 20

OpenStudy (anonymous):

D = square root((12-8)^2 +(11-8)^2 ) D = square root(16+9) = 5 Answer = 5 units

OpenStudy (anonymous):

Thanks , here's another one. Find the perimeter of triangle CDE. Round to the nearest tenth. https://www.connexus.com/content/media/102877-3182010-93934-PM-1187492183/res00000/ppg/examview/images/mc010-2.jpg 90.0 18.0 14.3 10.5

OpenStudy (turingtest):

you need to find the distance between each pair of points, then add them all up

OpenStudy (turingtest):

so what is the distance between point C and point D ?

OpenStudy (anonymous):

So what wouuld the answer be?

OpenStudy (turingtest):

you'll be able to tell me if you let me teach you how to solve the problem

OpenStudy (turingtest):

I haven't checked myself, so I'll just walk through it with you step by step

OpenStudy (dcolley):

@Missoyo thats the only way your going to learn it

OpenStudy (anonymous):

okayy

OpenStudy (anonymous):

math is to complicated for ,me :(

OpenStudy (turingtest):

I understand, but you need to take it slowly that's how math is so what are the coordinates of point C ?

OpenStudy (dcolley):

I understand that but it takes practice sometimes we actually make things are than they really are

OpenStudy (anonymous):

-3 , 3 ?

OpenStudy (anonymous):

-3 , 1 ? sorry.

OpenStudy (turingtest):

right :) and point D ?

OpenStudy (anonymous):

4, 1 ? :)

OpenStudy (turingtest):

almost remember x-coordinate is first y is second

OpenStudy (anonymous):

so it would 1,4 ?

OpenStudy (turingtest):

right! so the top side of the triangle would be the distance between points (-3,1) and (1,4). if we had walked you through the earlier problems this part would be easy, but I'm guessing you can't find that distance yet, right?

OpenStudy (anonymous):

Yes correct. I need alot of help :/ and this is a big grade , I really need to pass.

OpenStudy (turingtest):

If you want to pass please try not to ask for only answers all that gets you is a guaranteed F on the final exam so finding the distance between two point.... do you know the pythagorean theorem?

OpenStudy (anonymous):

Your right, I regret it now & No I don't.

OpenStudy (turingtest):

for any right triangle|dw:1335982603211:dw|the length of the hypotenuse \(c\) in relation to its sides \(a\) and \(b\) is given by the formula\[c^2=a^2+b^2\]ring a bell? if not you will just have to memorize a slightly harder formula...

OpenStudy (anonymous):

Yes I seen something like that

OpenStudy (turingtest):

now think about two points which have some coordinates \((x_1,y_1),(x_2,y_2)\) as being at each end of the hypotenuse|dw:1335982984200:dw|this means we can find the length of each leg, since the vertical is given by the difference in the \(y\) coordinate \(y_2-y_1\), and the horizontal length is given by the difference in the x-coordinate\(x_2-x_1\)

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