Answer:
2,3,4
Explanation:
These are all good things to do in a presentation, if some teacher don't like people to tell jokes or fiddle around they can take points away from you.
Answer:
trivia considerations, or pieces of information of little importance or value.
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Answer:
B.
Caucasus
Explanation:
~~This is a mountain range that is located between the Black Sea and the Caspian Sea which will be used as a border between Asia and Europe.
~~Countries included in the Caucasus would be Russia, Georgia, Azerbaijan, and Armenia.
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Exactly 80 liters of 20% are needed.
Let quantity of 20% alcohol solution be added : x liters
Here is the work:
> x*20% + 40 * 50% = (x+40) * 30%
> x*0.2 + 40*0.5 = (x+40)*0.3 ..(converting percentages into decimal)
> 0.2x + 20 = 0.3x + 12
> 20-12 = 0.3x - 0.2x (Rearranging similar terms)
> 8 = 0.1 x
Hence x = 8/0.1
Ans 80 Litres
