Rose receives 1 milligrams (mg) of a therapeutic drug on her first day in a hospital. The amount of the drug rose receives increases by the same amount, d, each day. On the seventh day, she receives 20 mg of the drug, and on the eleventh day she receives 26 mg. (a) Write down an equation, in terms of 1and d, for the amount of the drug that she receives (i) On the seventh day. (ii) On the eleventh day.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

d. all of the above

step-by-step explanation: