6 szkoły podstawowej

Matematyka wokół nas 6

Wiemy, że co 500 m temperatura maleje o 3oC.&nbsp; &nbsp; 15oC−5​⋅3oC=15oC−15oC=0oC

a)&nbsp;&nbsp; 10 000 m:500 m=100:5=20

a)&nbsp;&nbsp; 4b &lt; 0 &nbsp; Jeśli iloczyn jest ujemny, to b musi być liczbą ujemną.&nbsp; Np.:&nbsp;&nbsp; 4⋅(−1)=−4 &nbsp; b)&nbsp; 30<svg xmlns="http://www.w3.org/2000/svg" width='400em' height='0.548em' viewBox='0 0 400000 548' preserveAspectRatio='xMinYMin slice'><path d='M0 6l6-6h17c12.688 0 19.313.3 20 1 4 4 7.313 8.3 10 13
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a)&nbsp;&nbsp; 6⋅(−13)=−78

a)&nbsp; (−8)2=(−8)⋅(−8)=64

(−1)oC+2⋅(−2)oC=(−1)oC+((−4)oC)=(−5)oC &nbsp;&nbsp;

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