Help please I have test ​

X+y=-4 x-y=2 use elimination with adding and subtraction

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

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.