Starlightdust5314
18.09.2019 •
Mathematics
In a classroom the probabilty that the teacher chooses a boy from a girl is 0.45. how many boys are there?
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Ответ:
0.45/1=4.5/10=45/100=9/20
9/20 chance that chooses a boy
20 people
9/20 times 20=9
9 boys
Ответ:
P of choosing boy is given which 0.45
0.45=B/20
B=9 boys
Ответ:
Answer and Step-by-step explanation:
The correct answer choice would be to grind the solvent into smaller pieces.
When the solid is in smaller pieces, it would take less time for the dissolver to dissolve the smaller bits, since the pieces are smaller and take up less volume for the dissolver to go through.
With a bigger solid, the dissolver would just chip away at the solid before eventually dissolving the solid, although this could take some time.
#teamtrees #PAW (Plant And Water)