Предмет: Математика, автор: zawialowadarya

найдите : а)3/4 (дробь) числа 800 б) 20% числа 1200

Ответы

Автор ответа: Schoolrainbow

1)800 : 100• 3/4=8•3/4=6
2)1200:100%•20=12•20=240

Автор ответа: LoloшkaxD

$frac{3}{4} * 800 = 800 * [tex] frac{3}{4}$ = 6
20 % - это $frac{1}{5}$ ⇒ 1200* $frac{1}{5}$ = 240

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Minerals are an essential part of life on Earth as they work to promote the health of all living cells. They are necessary ingredients of life. There are over 20 minerals which are essential for mammalian life on Earth. Among these, there are some minerals that appear with the most prevalence in the human body.
Calcium plays an important role in forming bones and teeth; helps with blood clotting, and muscle and nerve function.
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Magnesium helps maintain normal muscle and nerve function; it sustains regular heartbeat; keeps bones strong; helps your body produce energy.
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