Answer:
Supplementary angles
Step-by-step explanation:
Supplementary angles are two angles whose sum is 180 degrees while complementary angles are two angles whose sum is 90 degrees.
Answer: 7
Step-by-step explanation:

= 
= 
= 7
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A, expect the second term (2xy) should be just 2y
How many kilograms of peaches per cup....
kg / cup : 15/100 = 0.15 kg of peaches per cup
distribute the -3 to the -4y and the 3 making the question 12y-9+7y then add common factors to get 19y-9