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raketka [301]
3 years ago
15

A town has three roads that form an obtuse triangle. James wants to set up a refreshment stand so that the shortest distance fro

m his stand to each road is the same for all three roads. Where should he set up the refreshment stand?
A. on the centroid
B. on the circimcenter
C. on the incenter
D. on the median

I have an hour 50min to do this please help!
Mathematics
1 answer:
GarryVolchara [31]3 years ago
4 0
He should set up the refreshment stand on the incenter of the obtuse triangle. The incenter of a triangle is described as the intersection between the angle bisectors of a triangle. The inradius are the line segments from the incenter of the triangle to each of the three sides of the triangle which are all equal. The inradius is depicted as the radius of an inscribed circle in the triangle. Therefore, the shortest equal distance from his stand to each road is C. on the incenter.
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soldi70 [24.7K]

Answer:

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  • time in air: 3.4 s

Step-by-step explanation:

A graphing calculator provides a nice answer for these questions. It shows the maximum height is 48.6 feet, and the time in air is 3.4 seconds.

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The equation can be rewritten to vertex form to find the maximum height.

  h(t) = -16(t^2 -54/16t) +3 . . . . . group t-terms

  h(t) = -16(t^2 -54/16t +(27/16)^2) + 3 + 27^2/16

  h(t) = -16(t -27/16)^2 +48 9/16

The maximum height is 48 9/16 feet, about 48.6 feet.

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The air time is found at the value of t that makes h(t) = 0.

  0 = -16(t -27/16)^2 +48 9/16

  (-48 9/16)/(-16) = (t -27/16)^2 . . . . . . . subtract 48 9/16 and divide by -16

  (√777 +27)/16 = t ≈ 3.4297 . . . . . square root and add 27/16

The time in air is about 3.4 seconds.

8 0
3 years ago
Which point is 5 units from (1, –3) on a coordinate plane? A. (–8, 6) B. (6, –3) C. (–3, –6) D. (1, –2)
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On average, a person spends $240 every 3 months on their cellphone bill . What would the price for 1 month. How much would this
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Step-by-step explanation:

price of one month = total expense/ number  of month

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therefore persons annual expenses = 80*12= $960

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