Answer:
m C and m D are a linear pair // Definition of supplementary angles
m C + m D =180 // Definition of a linear pair
Step-by-step explanation:
2.25
divide
the third one is the correct answer
hope that helps
5 +3(y-4) = 4y +10
5 + 3y -12= 4y +10
-7 +3y = 4y + 10
3y - 4y = 10 + 7
-y = 17
y= -17
, The proper formula to find the volume is, 
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