How do you get 24 with the numbers 3, 9, 7, and 1?

If the measure of xyz is 81 what is the measure of yz

If you answer 2+2 you will get over 80 points

40 points. given: two congruent angles ∠c and ∠r are supplementary. prove: ∠r and ∠c are both right angles. it doesn't have to be exactly 10 rows.statements reasons1. 1. 2. 2. 3. 3. 4. 4. 5. 5. 6. 6. 7. 7. 8. 8. 9. 9. 10. 10.