Zad3
Oblicz Liczby m i k jesli :
m={(½)²₊(₋2)²₊(0,25)·(½)⁻3
-----------------------------------
(1½)²÷(0,5)²
k={(6₋³|₄)÷(7¾₋½)₊2⁸|₂₉}·1¹∫₃
b) znajdz liczbe ktorej 45% wynosi k
b) jakim procentem liczby k jest liczba m
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m={(½)²₊(₋2)²₊(0,25)·(½)⁻3
----------------------------------- =
(1½)²÷(0,5)²
[¹/₄ +4 +²⁵/₁₀₀ · ½ -3]
-------------------------- =
(³/₂)² ÷ (⁵/₁₀)²
4¼ +²⁵/₂₀₀ -3
----------------- =
⁹/₄ ÷²⁵/₁₀₀
4¼ + ¹/₈ - 3
----------------- =
⁹/₄ · ¹⁰⁰/₂₅
4²/₈ +⅛ - 3
--------------- =
9
4⅜ - 3
--------- =
9
1⅜ ÷ 9 =
¹¹/₈ · ¹/₉ =
¹¹/₇₂
m = ¹¹/₇₂
k={(6₋³|₄)÷(7¾₋½)₊2⁸|₂₉}·1¹∫₃
[(5⁴/₄ -¾)÷(7¾ -²/₄)+ ⁶⁶/₂₉ ·⁴/₃ ]=
[5¼÷7¼ + ⁸⁸/₂₉] =
²¹/₄ ÷²⁹/₄ + ⁸⁸/₂₉ =
²¹/₄ · ⁴/₂₉ + ⁸⁸/₂₉ =
²¹/₂₉ + ⁸⁸/₂₉ =
¹⁰⁹/₄ =
27¼ =27,25
k=27,25
b)
45%·27,25=
0,45 ·27,25=
12,2625
b)
27,25 - 100%
¹¹/₇₂ - x
x=¹¹/₇₂ · 100%
------------------
27,25
x=15,28%
-------------
27,25
x=0,56%
liczba m stanowi 0,56 % liczby k