https://peda.net/id/6367ee0e126 2019-01-07T13:14:23+02:00 https://peda.net/:static/535/peda.net.logo.bg.svg <div class="license">Tämän sivun lisenssi <a rel="license" href="https://peda.net/info">Peda.net-yleislisenssi</a></div> https://peda.net/id/f0a093a4127 2019-01-07T13:45:31+02:00 <div>1.</div> <div>a) suora kulma</div> <div>b) oikokulma</div> <div>c) terävä kulma</div> <div>d) tylppä kulma</div> <div>2.</div> <div>a) β on suurempi</div> <div>b) yhtä suuret</div> <div>c) α on suurempi</div> <div>3.</div> <div>a) 1000mm=100cm=1m=0,001km</div> <div>b) 0,000001km^2=0,0001ha=1a=10000cm^2</div> <div>c) 0,001m^3=1dm^3=1l=100cl<br/> 4. <br/> a)<br/> <img src="https://math-demo.abitti.fi/math.svg?latex=2x%2B1%3D3" alt="2x+1=3"/><br/> <img src="https://math-demo.abitti.fi/math.svg?latex=2x%3D3-1" alt="2x=3-1"/><br/> <img src="https://math-demo.abitti.fi/math.svg?latex=2x%3D2%5C%20%5Cparallel%3A2" alt="2x=2\ \parallel:2"/><br/> <div><img src="https://math-demo.abitti.fi/math.svg?latex=x%3D1" alt="x=1"/><!--filtered attribute: style="display: inline;"--><br/> <div>b)</div> <div><img src="https://math-demo.abitti.fi/math.svg?latex=x%5E2%3D25%5C%20%5Cparallel%5Csqrt%7B%20%7D" alt="x^2=25\ \parallel\sqrt{ }"/><br/> <img src="https://math-demo.abitti.fi/math.svg?latex=x%3D%5Cpm5" alt="x=\pm5"/></div> <div>c)</div> <div><img src="https://math-demo.abitti.fi/math.svg?latex=%5Cfrac%7Bx%7D%7B2%7D%3D%5Cfrac%7B3%7D%7Bx%7D%5Cparallel%5Ccdot2x" alt="\frac{x}{2}=\frac{3}{x}\parallel\cdot2x"/><br/> <img src="https://math-demo.abitti.fi/math.svg?latex=x%5E2%3D6%5C%20%5Cparallel%5Csqrt%7B%20%7D" alt="x^2=6\ \parallel\sqrt{ }"/><br/> <img src="https://math-demo.abitti.fi/math.svg?latex=x%3D%5Cpm%5Csqrt%7B6%7D" alt="x=\pm\sqrt{6}"/></div> <div>d)</div> <img src="https://math-demo.abitti.fi/math.svg?latex=x%5E2-x-2%3D0" alt="x^2-x-2=0"/><br/> <img src="https://math-demo.abitti.fi/math.svg?latex=x%3D%5Cfrac%7B-b%5Cpm%5Csqrt%7Bb%5E2-4ac%7D%7D%7B2a%7D%3D%5Cfrac%7B1%5Cpm3%7D%7B2%7D%3D2%5C%20tai%5C%20-1" alt="x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}=\frac{1\pm3}{2}=2\ tai\ -1"/></div> <div><br/> 5. <br/> a)<br/> <img src="https://math-demo.abitti.fi/math.svg?latex=A%3D%5Cfrac%7B2%7B%2C%7D0cm%5Ccdot3%7B%2C%7D0cm%7D%7B2%7D%3D3%7B%2C%7D0cm%5E2" alt="A=\frac{2{,}0cm\cdot3{,}0cm}{2}=3{,}0cm^2"/><br/> b)<br/> <img src="https://math-demo.abitti.fi/math.svg?latex=A%3D4%5Ccdot5-2%5Ccdot2%3D16" alt="A=4\cdot5-2\cdot2=16"/><br/> c)<br/> <img src="https://math-demo.abitti.fi/math.svg?latex=A%3Dx%5Cleft(5-x%5Cright)%3D5x-x%5E2%3D-x%5E2%2B5x" alt="A=x\left(5-x\right)=5x-x^2=-x^2+5x"/><br/> 6. <br/> a) x+3x=4x<br/> b)<br/> <img src="https://math-demo.abitti.fi/math.svg?latex=14m%3D4x%5C%20%5Cparallel%3A4" alt="14m=4x\ \parallel:4"/><br/> <img src="https://math-demo.abitti.fi/math.svg?latex=x%3D3%7B%2C%7D5m" alt="x=3{,}5m"/><br/> <img src="https://math-demo.abitti.fi/math.svg?latex=3x%3D10%7B%2C%7D5m" alt="3x=10{,}5m"/></div> </div> 2019-01-07T13:39:49+02:00