anonymous
  • anonymous
Find the midpoint of the segment with the given endpoints. M(–2, 1) and O(–3, 2) A. (–2.5, 1.5) B. (–0.5, –0.5) C. (0.5, –0.5) D. (–3, –5)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
its D.
anonymous
  • anonymous
K so a midpoint is basically an average of the x points and of the y points. The formula is x1+x2 divided by 2, y1+y2 divided by 2. If we do this we get- (-2+-3) (1+2) ------- & ----- 2 2 -5/2, 3/2= (-2.5,1.5)
anonymous
  • anonymous
Ohhhh okay I get it! :D Okay can you help me with one more?

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anonymous
  • anonymous
I believe I know the answer but I need to know if I'm right.
anonymous
  • anonymous
Sure.
anonymous
  • anonymous
Wires are attached to a pole to make it more secure. The diagram shows one of those wires having a length of 220 feet. The angle of elevation from the ground to the top of the pole is 36. What is the height of the pole?
anonymous
  • anonymous
http://i1188.photobucket.com/albums/z417/esmy_071/mc019-2.jpg
anonymous
  • anonymous
A. 178.0 ft B. 374.3 ft C. 159.8 ft D. 129.3 ft
anonymous
  • anonymous
This one is C what do you think?
anonymous
  • anonymous
Sorry, but Idk this one :( I'm thinking maybe it has something to do w/ tan/cos/sin
anonymous
  • anonymous
Hmmm okay ill figure it out tho... Thank you
anonymous
  • anonymous
Sry :( I think though it has something to do with sine
anonymous
  • anonymous
yeah I just put what I thought :) thanks tho...
anonymous
  • anonymous
This can be solved with trigonometry. The hypotenuse has been given and the opposite side is needed. In this case, we will need to use sine. sin = opposite/hypotenuse let the opposite side length be y so sin(36) = y/220 220sin(36) = y plug that into a scientific calculator and you get 129.3ft so the answer is D

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