You have 400 mg of a radioisotope with a half-life of 5 minutes. How much will be left after 30 minutes?

Free brainliest + free points if answered ! vehicles are expected to be moving at around on highways. a. 30-50 mph b. 40-60 mph c. 50-70 mph d. 60-80 mph

You want free points & brainliest? answer this drivers ed question correctly and i got you in which of the following situations should you use your vehicle's hazard lights? a. you're stopped on the side of the road with an engine that won't start. b. you're driving toward the shoulder because you hear a strange noise. c. you're driving in the rain and your headlights aren't functioning. d. you're driving slowly because you just spilled coffee on your lap.

Which of the following entities ensure that national security policies are carried out? check all that apply.