The drug valium is eliminated from the bloodstream exponentially with a half-life of 36 hours. suppose that a patient receives an initial dose of 75 milligrams of valium at midnight.  a. how much valium is in the patient's blood at noon the next day? b. estimate when the valium concentration will reach 35% of its initial level.  step by step

Part a  : After  next day in noon it will be 59.53 mg

Part b : After 52.53 hours it will be  35 % of initial

Step-by-step explanation:

Equation is given by

A = 75(0.5)

initial dose at midnight

Part (a) then at noon next day means 12 hrs ,plugging t = 12 here ,we get

  A=75(0.5)

on simplifying it ,we get

A =75(0.7937)

A=59.53 mg

Part (b)   : 35 % of initial level means A = 0.35 of initial= 0.35 (75 )

t = 54.53 hours

After 54.53 hours it will remain 35% of initial amount

a. turk and mcalister

b. howard, mission, and market

c. yes. since streets end some do not cross yet are not parallel to others. example: mcalister and 5th

step-by-step explanation:

parallel lines are lines which do not intersect ever and look a lot like railroad tracks. turk, mcalister and golden gate are examples of these.

intersect are streets which cross each other and a car on one can reach the other. howard, mission, and market intersect with 6th.

skew lines are lines which neither intersect nor are parallel. these lines exist here because some streets end and never intersect another like mcalister and 5th.

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse