Which matrix equation represents this linear system?
2x-5y=-7
4x+3y=-1

Can (3,5 and square root 34) be sides on a right triangle?

Jacks bank statement shows an account balance of -$25.50. which describes the magnitude, of size, of the debt in dollars

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