Solve the system using elimination. 4 x - 7y = 3
x = 7y = -15.
A. the ordered pair (negative 12 over 5, 10 over 7)
B. the ordered pair (-1, 2)
C. the ordered pair (6, 3)
D. the ordered pair (1, one-seventh)

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

In the following diagram it is given that dec, ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2