2x + y = 5
3x - y = 15...
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
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
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 14:30
Click on the graphic until you find the right quotient. (36xa - 30xb) ÷ (-6x2)
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 16:20
Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:50
In the diagram, gef and hef are congruent. what is the value of x
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 24.01.2021 21:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 24.01.2021 21:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 24.01.2021 21:40
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 24.01.2021 21:40
![question](/tpl/images/cats/mat.png)
Mathematics, 24.01.2021 21:40
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 24.01.2021 21:40
![question](/tpl/images/cats/mat.png)
Mathematics, 24.01.2021 21:40
![question](/tpl/images/cats/mkx.png)
Arts, 24.01.2021 21:40
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
Medicine, 24.01.2021 21:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 24.01.2021 21:40
![question](/tpl/images/cats/fizika.png)
Physics, 24.01.2021 21:40
![question](/tpl/images/cats/mat.png)
Mathematics, 24.01.2021 21:40