There are 21 students in mr. tentler's class. the students divided themselves evenly into 3 groups. how many students are in each group?

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

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

Which numbers have the same absolute value? choose all that apply. asap will mark at brainliest