Find perimeter of rectangle whose length is 40cm and a diagonal is 41 cm with work pls :)​

65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

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