Mathematics, 28.07.2019 14:00 bwheele6791
Two companies offer digital cable television as described below. company a: $39.99 per month no installation fee company b: $34.99 per month with a $50 installation fee for each company tell whether the relationship is proportional between months of service and total cost is a proportional relationship. explain why or why not
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
Mathematics, 21.06.2019 13:30
Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)
Answers: 3
Mathematics, 21.06.2019 18:00
Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults.how many students and adults went if the ticket charge was $42.75
Answers: 1
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