# What is the total cost of a $2,099 couch including the 6.5% sales tax​ Answers: 1 ### Other questions on the subject: Mathematics 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, 20.06.2019 18:04, miagirl0311 John makes$10.50 pers hour what expression represens how much he will make if he works h hours
Mathematics, 21.06.2019 13:20, payshencec21
The ratio of two numbers is 5 to 4. the sum of the numbers is 99. what number is the greater of the two numbers?