A doctor prescribes her patient a 20-mg dose of medicine, and the medicine has a concentration of 80 mg/ml. How much medication will the patient receive?m

0.25 ml

Explanation:

It is given that,

Dosage of medicine = 20 mg

The medicine has a concentration of 80 mg/ml

So, the patient will receive 0.25 ml. Hence, the correct option is (a).

x = -6.5

explanation:

with this editor, you should be careful to put what you mean. 5/(2x - 7) = 3/(4x +14) is the way i will interpret it. cross multiply

5*(4x + 14) = 3*(2x - 7)       remove the brackets

20x + 70 = 6x - 21             add 21 to both sides

20x+ 70+21= 6x                 combine

20x + 91 = 6x                     subtract 20x

20x-20x+91=6x-20x           combine

91 = - 14x

x = - 91/14

x = - 6.5

ok will do i shall do that now