Answer:
The mean is 
Step-by-step explanation:
Answer:
Joseph's present age=3 yrs
David's present age=9 yrs
Step-by-step explanation:
Let Joseph's present age be x.
David's present age=3x
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Ater 3 yrs,
Joseph's age=x+3
David's age=2(x+3)
Also, we can add 3 to David's present age to get age After 3 yrs. So, David's age after 3 yrs would also be 3x+3.
Now, balance them.
3x+3=2(x+3)
3x+3=2x+6
x=3
D"s prsent age=9
J's present age=3
Convert the grams into milligrams. 0.5 = 500 (to covert you'll multiply .5 x 1000).
D/H x Q will be the formula to use now that we have like terms (mg).
D= dose to give
H = dose that is supplied
Q= quantity to give
In this case your numbers will be
D = 500mg
H = 250mg
Q = 1 tablet
500 ÷ 250 = 2
2 x 1 = 2
So, that means you will give 2 tablets to your patient.
