Hurry find the product of (x^2+4x-3)(2x^2+x+6).a)2x^4+9x^3+4x ^2+21x-18b)2x^4+9x^3+10x^2+21x-18c) 2x^4+7x^3+4x^2+21x-18d)2x^4+9x^3+4x ^2+27x-18

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

Plz hurry evaluate the expression a+b where a=8 and b=19