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Answer:
12
Step-by-step explanation:
7*3=21 so 4*3=12
Answer:
Each book weighs 2.5 pounds.
Step-by-step explanation:
75/2.5 is 30. Or you could also get the answer by 30* 2.5 which it would be 75. So, therefor, the answer is 2.5.
55°
Step-by-step explanation:
110+15+x =180
x = 180 - 125
x = 55°