Вычислите: 1) 3*|-0,8| + 0,9*|6|; 2) 5\8*|0,8| + |-4,5| : 0,3; 3) 5\12*|-4\5| + 2,4 : |3,6|; 4) 0,19 + |-0,17|*3-|2,4| : 6.. Created by irishka1609. matematika-ru

1)3·|-0,8|+0,9·|6| = 3·0,8+0,9·6 = 2,4+5,4 = 7,82)3)4)0,19+|-0,17|·3-|2,4|:6 = 0,19+0,17·3-2,4:6 = 0,19+0,51-0,4 = 0,7-0,4 = 0,3Ответ: 1) 7,8; 2) 15,5; 3) 1; 4) 0,3.

Вычислите: 1) 3*|-0,8| + 0,9*|6|; 2) 5\8*|0,8| + |-4,5| : 0,3; 3) 5\12*|-4\5| + ...

irishka1609 @irishka1609

June 2022 1 14 Report

Вычислите:
1) 3*|-0,8| + 0,9*|6|;
2) 5\8*|0,8| + |-4,5| : 0,3;
3) 5\12*|-4\5| + 2,4 : |3,6|;
4) 0,19 + |-0,17|*3-|2,4| : 6.

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3·|-0,8|+0,9·|6| = 3·0,8+0,9·6 = 2,4+5,4 = 7,8

$\displaystyle \frac58 \cdot |0,\! 8|+|-4,\! 5|:0,3=\frac58 \cdot 0,\! 8+4,\! 5:0,\! 3=\\ \\ =\frac48 +45:3 =0,\! 5+15=15,\! 5$

$\displaystyle \frac5{12}\cdot \bigg|-\frac45 \bigg|+2,\! 4:\bigg| 3,\! 6\bigg| =\frac5{3\cdot 4} \cdot \frac45 +\frac{12\cdot 2}{12\cdot 3} =\\ \\ =\frac13 +\frac23 =1$

0,19+|-0,17|·3-|2,4|:6 = 0,19+0,17·3-2,4:6 = 0,19+0,51-0,4 = 0,7-0,4 = 0,3

Ответ: 1) 7,8; 2) 15,5; 3) 1; 4) 0,3.

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