Hey!
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Question #15:
a = 4
m = 180
Substitute.
D = a/a + 12 * M
D = 4/4 + 12 * 180
Solve.
D = 4/16 * 180
Simplify.
D = 1/4 * 180
Multiply.
D = 45
Answer:
45
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Question #16:
Conversion.
1 pound = 0.454 kg
Multiply.
0.454 x 55 = 24.97
Round.
24.97 = 25
Answer:
25 kilograms.
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Question #17:
Conversion.
1 kilogram ≈ 2.2 pound.
Multiply.
2.2 x 84.09 = 184.998
Round.
184.998 = 185
Answer:
185 pounds.
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Question #18:
Divide.
180 / 3 = 60
Answer:
60 milligrams.
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Hope This Helped! Good Luck!