Oblicz:a) 1,2 x 5/2 4 1/4 :0,01 ----------- : ---------------- 0,16x 1/4 6,25x 4/25b) 0,5+ 0,2x0,6 + 0,7+0,2x 1/4----------------- ------------------3/4-7:10 0,7-0,4x1/2 c) 3+2 1/2x0,3 4+0,1x10-------------- x -----------3 3/4:(4,8-3x0,6) 1,6x5
.-
Temat:
Matematyka -
Autor:
rich21 -
Utworzono:
1 rok temu
Odpowiedzi 1
[tex]a) \\\\\frac{1.2*\frac52}{0.16*\frac14}:\frac{4\frac14:0.01}{6.25*\frac4{25}}=\frac{\frac{6}{5}*\frac52}{\frac{4}{25}*\frac14}:\frac{\frac{17}4:\frac{1}{100}}{\frac{25}{4}*\frac4{25}}=\frac{\frac62}{\frac1{25}}:\frac{\frac{1700}{4}}{1}=\frac62*25*\frac4{1700}=\frac62*\frac4{68}=\frac61*\frac2{68}=6*\frac1{34}=\frac6{34}=\frac3{17}[/tex]
[tex]b) \\\\\frac{0.5+0.2*0.6}{\frac34-7:10}+\frac{0.7+0.2*\frac14}{0.7-0.4*\frac12}=\frac{0.5+0.12}{0.75-0.7}+\frac{0.7+0.05}{0.7-0.2}=\frac{0.62}{0.05}+\frac{0.75}{0.5}=12.4+1.5=13.9[/tex]
[tex]c)\\\\\frac{3+2\frac12*0.3}{3\frac34:(4.8-3*0.6)}*\frac{4+0.1*10}{1.6*5}=\frac{3+0.75}{3.75:3}*\frac{4+1}{8}=\frac{3.75}{1.25}*\frac58=3*\frac58=\frac{15}8=1\frac78=1.875[/tex]
-
Autor:
jaggeraxof
-
Oceń odpowiedź:
0