Mathematics, 27.10.2021 14:00, ellieballinger9364
A set of average city temperatures in July are normally distributed with a mean of 23.5 ^\circ \text{C}23.5 ∘ C23, point, 5, degrees, start text, C, end text and a standard deviation of 2 ^\circ \text{C}2 ∘ C2, degrees, start text, C, end text. The average temperature of Rabat is 23 ^\circ \text{C}23 ∘ C23, degrees, start text, C, end text. What proportion of average city temperatures are higher than that of Rabat?
Answers: 3
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?
Answers: 2
Mathematics, 21.06.2019 14:10, mbatton879
5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?
Answers: 2
A set of average city temperatures in July are normally distributed with a mean of 23.5 ^\circ \text...
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