Mathematics, 13.10.2020 02:01 BigI80531
a woman has some peanuts. she sees a friend at the door and she quickly eats a peanut before her friend enters and takes one-half of the remaining peanuts. she sees another friend at the door and she quickly eats another peanut before the second friend enters and takes one-half of the remaining peanuts. Finally, she sees a third friend at the door and she eats another peanut before the third friend enters and takes on half of the remaining peanuts, leaving her with only one peanut. How many peanuts did the woman originally have?
Answers: 3
Mathematics, 20.06.2019 18:04
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 17:30
Asphere has a diameter of 10 in. what is the volume of the sphere?
Answers: 1
Mathematics, 21.06.2019 19:00
Angela is buying a dress that is on sale for 20% off. if the original price of the dress is $40.00, how much money is angela saving on the dress? a. $0.80 b. $3.20 c. $32.00 d. $8.00
Answers: 1
Mathematics, 21.06.2019 19:30
The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?
Answers: 1
a woman has some peanuts. she sees a friend at the door and she quickly eats a peanut before her fri...
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