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kittimau
22.10.2019 •
Mathematics
Przeciętny orzeł waży 1,68 kg, a przeciętny wróbel - 25 g. mózg orła waży 14 g, a mózg wróbla - 1 g. oblicz, jakim procentem masy każdego z tych ptaków jest masa jego mózgu.
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Ответ:
Eagle - 0.83%
Sparrow - 4%
Step-by-step explanation:
1. On average, the weight of the eagle is 1.68 kg. Its head weighs 14 g.
Then
1.68 kg = 1,680 g - 100%
14 g - x%
Write a proportion:
Cross multiply:
2. On average, the weight of the sparrow is 25 g. Its head weighs 1 g.
Then
25 g - 100%
1 g - x%
Write a proportion:
Cross multiply:
Ответ:
part A: 90/725
Part b: 165/225
Part c: 100/245
Part d: these events are not independent.
Step-by-step explanation: