I’m not sure why it won’t let me input this answer? Is it wrong? What’s the right answer?

Explain how you can use the associative property to evaluate (7x50)x4.

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