Esmy 3 years ago 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)

1. Esmy

its D.

2. Loujoelou

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)

3. Esmy

Ohhhh okay I get it! :D Okay can you help me with one more?

4. Esmy

I believe I know the answer but I need to know if I'm right.

5. Loujoelou

Sure.

6. Esmy

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?

7. Esmy
8. Esmy

A. 178.0 ft B. 374.3 ft C. 159.8 ft D. 129.3 ft

9. Esmy

This one is C what do you think?

10. Loujoelou

Sorry, but Idk this one :( I'm thinking maybe it has something to do w/ tan/cos/sin

11. Esmy

Hmmm okay ill figure it out tho... Thank you

12. Loujoelou

Sry :( I think though it has something to do with sine

13. Esmy

yeah I just put what I thought :) thanks tho...

14. georgeblue22

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