Lose that friend he or she is no good!!
Circumference- 2rП- 15
Radius- (15:2):П is approximately 2,38
Area= Пr2=2,38x2,38x3,14=approximately 17,90
Radius rounded to tenth is 2,4
Answer:
Caffeine is a central nervous system stimulant of the methylxanthine class. It is the world's most widely consumed psychoactive drug. Unlike many other psychoactive substances, it is legal and unregulated in nearly all parts of the world. There are several known mechanisms of action to explain the effects of caffeine.
Cocaine is a tropane alkaloid and stimulant drug obtained primarily from the leaves of two coca species, Erythroxylum coca and Erythroxylum novogranatense. It is most commonly used as a recreational drug and euphoriant
Amphetamine is a central nervous system stimulant that is used in the treatment of attention deficit hyperactivity disorder, narcolepsy, and obesity. Amphetamine was discovered in 1887 and exists as two enantiomers: levoamphetamine and dextroamphetamine.
Sugars and starches belong to Carbohydrates
Answer:
Cause: didn't study
Effect: he failed
Explanation:
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