The concentration C(t) of a certain drug in the bloodstream after t minutes is given by the formula C(t)=0.04(1-e^-0.2t) what is the concentration after 5 minutes? Round to three decimal places

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

he has now walked a total of what?

if i know what this is maybe i can

step-by-step explanation:

answer is  

a.

p = 78

step-by-step explanation:

hi there, i would be interested to you with your test, may you add the questions and answer options.

- : )