Answer:
The answer to your questions are:
15.- 45 mg
16.- 25 kg
17.- 185 pounds
18.- 6 mg
Step-by-step explanation:
D = (a M) / (a + 12)
15.-
a = 4 years
M = 180
D = (4 x 180) / (4 + 12) = 720 / 16
D = 45 mg
16.- 1 pound --------------- 0.4535 kg
55 pounds ------------ x
x = 55 x 0.4535 / 1
x = 24.94 ≈25 kg
17.- 1 pound --------------- 0.4535 kg
x --------------- 84.09 kg
x = 84.09x 1 /0.4535
x = 185.42 pounds
18.- M = 18 mg what is 1/3 of the adult dose?
M = 18/3 = 6 mg
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
45
Question #16:
Conversion.
1 pound = 0.454 kg
0.454 x 55 = 24.97
Round.
24.97 = 25
25 kilograms.
Question #17:
1 kilogram ≈ 2.2 pound.
2.2 x 84.09 = 184.998
184.998 = 185
185 pounds.
Question #18:
Divide.
180 / 3 = 60
60 milligrams.
Hope This Helped! Good Luck!
4x=y where x is the number of packages and y is the total cost
