Matematyka
basiieq93
2017-06-27 06:19:17
zadania w załączniku. prosiłabym o zadanja zrobione ze wszystkimi obliczeniami :)
Odpowiedź
Fernando200
2017-06-27 08:57:16

1). -1/2 +3/8 = -4/8 +3/8 = -1/8 5/3 · (-9/10) = -3/2 = -1 i 1/2 2,8-(-1,2) = 4 (-3/5) : (-4/15) = -3/5 · (-15/4) = 9/4 = 2 i 1/4 2). 3³ = 27 5⁻² =(1/5)² = 1/25 (3/2)⁴ = 81/16 = 5 i 1/16 (1/2)³ = 1/8 (1/2)² = 1/4 3). 15% z 550zł = 0,15 · 550zł = 82,5zł 4). [latex] frac{2}{3 sqrt{6} } = frac{2 sqrt{6} }{3 sqrt{6} * sqrt{6} } = frac{2 sqrt{6} }{3* sqrt{36} } = frac{2 sqrt{6} }{3*6} = frac{2 sqrt{6} }{18} = frac{ sqrt{6} }{9} \ \ frac{ sqrt{5} }{5* sqrt{15} } = frac{1}{5 sqrt{3} } = frac{1 sqrt{3} }{5 sqrt{3}* sqrt{3} } = frac{ sqrt{3} }{5* sqrt{9} } = frac{ sqrt{3} }{5*3} = frac{ sqrt{3} }{15} [/latex]

Anecia12
2017-06-27 08:58:31

[latex]1.\\-frac{1}{2}+frac{3}{8} = -frac{4}{8}+frac{3}{8} = -frac{1}{4}\\frac{5}{3}cdot(-frac{9}{10})= -frac{3}{2}= -1frac{1}{2}\\2,8 - (-1,2) = 2,8 + 1,2=4\\(-frac{3}{5}):(-frac{4}{5}) = (-frac{3}{5})cdot(-frac{15}{4}) = (-3)cdot(-frac{3}{4}) = frac{9}{4} = 2frac{1}{4}[/latex] [latex]2.\3^{3} = 3cdot3cdot3 = 27\\5^{-2} = (frac{1}{5})^{2} = frac{1}{25}\\(frac{3}{2})^{4}:(frac{3}{2})^{2} = (frac{3}{2})^{4-2} = (frac{3}{2})^{2} = frac{9}{4} = 2frac{1}{4}\\(frac{1}{2})^{3}cdot(frac{1}{2})^{2} = (frac{1}{2})^{3+2} = (frac{1}{2})^{5} = frac{1}{32}[/latex] [latex]3.\15\% z 550 zl = frac{15}{100}cdot550 = 82,50 zl[/latex] [latex]4.\\frac{2}{3sqrt{6}}cdotfrac{sqrt{6}}{sqrt{6}}=frac{2cdotsqrt{6}}{3cdot6} = frac{sqrt{6}}{3cdot3}=frac{sqrt{6}}{9}\\frac{sqrt{5}}{5sqrt{15}}cdotfrac{sqrt{15}}{sqrt{15}}=frac{sqrt{5cdot15}}{5cdot15}= frac{sqrt{75}}{75} = frac{sqrt{25cdot3}}{75}=frac{5sqrt{3}}{75} =frac{sqrt{3}}{15}[/latex]

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