Mathematics, 28.01.2021 22:50 4presidents
Students from two age groups were surveyed to see how they travel to school. Here are the results:
Below age 15—Walk or bike: 87; Bus: 60; Car: 18
Age 15 and above—Walk or bike: 65; Bus: 50; Car: 80
Which of the following is a correct two-way relative frequency table for the data?
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 15:00
Which property is illustrated by the statement given below? raj raj.
Answers: 3
Mathematics, 21.06.2019 19:30
According to the data set, where should the upper quartile line of the box plot be placed?
Answers: 1
Students from two age groups were surveyed to see how they travel to school. Here are the results:...
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