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Mathematics, 28.01.2021 22:00 chase1869
The scale drawing of a park uses the scale 5 cm= 1 km. what is the perimeter of the actual park?
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Mathematics, 20.06.2019 18:04, Uc34758
Here is their argument. given the obtuse angle x, we make a quadrilateral abcd with ∠dab = x, and ∠abc = 90◦, and ad = bc. say the perpendicular bisector to dc meets the perpendicular bisector to ab at p. then pa = pb and pc = pd. so the triangles pad and pbc have equal sides and are congruent. thus ∠pad = ∠pbc. but pab is isosceles, hence ∠pab = ∠pba. subtracting, gives x = ∠pad−∠pab = ∠pbc −∠pba = 90◦. this is a preposterous conclusion – just where is the mistake in the "proof" and why does the argument break down there?
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Mathematics, 21.06.2019 21:30, stichgotrich849
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Mathematics, 22.06.2019 01:00, Bryson2148
Find the rate of change for the situation. you run 7 miles in one hour and 21 miles in three hours.
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The scale drawing of a park uses the scale 5 cm= 1 km. what is the perimeter of the actual park?
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