Quest? es matemáticas 4) 3a- 4b ( 4 - 7a + 2b ) + b 6) 3mn ( m? + n? - m + 4n - 5 ) 8) ( x + ? 5 )? 9) ( 4x + 2y )? 10) (2w-1,6)? 13) (x+11)(x+18) 15) (x+4,7)(x+3,25) considere x=-4, y=48 e z=2,7 17) 2x-y+3z 18) xz+1,57 20) x? +2x? -4x

1. a right triangle is graphed on a coordinate plane. find the length of the hypotenuse. round your answer to the nearest tenth. 2. use the angle relationship in the figure below to solve for the value of x. assume that lines a and b are parallel and line c is a transversal.

Lv beethoven software supplies customized software to a managed healthcare system. lv beethoven software's costs for the software is $1,723,000. lv beethoven software sells the software to the healthcare system for $3,816,981.10. overhead expenses are estimated at 47% of the selling price. what is lv beethoven software's net profit to the nearest dollar?

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