Sandy bought a soft drink for 4 dollars and 9 candy bars. She spent
a total of 49 dollars. How...
Mathematics, 05.05.2020 22:13 ajm1132005
Sandy bought a soft drink for 4 dollars and 9 candy bars. She spent
a total of 49 dollars. How much did each candy bar cost?
answer choices
4c + 9 = 49
49 - 9 = 4c
49c + 4 = 9
9c + 4 = 49
Answers: 1
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
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Mathematics, 21.06.2019 21:30
Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.
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Mathematics, 21.06.2019 23:30
What are the measures of angles a, b, and c? show your work and explain your answers. 25 points
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