Question

Tot testul 1
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Answer 1

1)

a) 0,15•1,2+6,25:2,5=0,18+2,5=2,68

b) 17,57-0,2•3+1,44:1,2=17,57-0,6+1,2=16,97+1,2=18,17

c) 3,5+10³•(0,3)³-79,8:4,2=3,5+(10·0,3)³-79,8:4,2=

3,5+3³-19=3,5+27-19=11,5

d) 48:0,2+3,2²:1,6-4,3•0,1=240+10,24:1,6-0,43=240+6,4-0,43=246,4-0,43=245,97

La 2 poti sa folosesti calculatorul

3)

1)17,25 * 0,2=3,45

2)17,25 + 0,2=17,45

3)17,25 - 0,2=17,05

4)

a=(0,2)^100 * 25^50

=(0,2)^100 * (5^2)^50

=(0,2)^100 * 5^100

=(0,2 * 5)^100

= 1^100

b=0,25^25 * 0,04^25

=(25/100)^25 * (4/100)^25

=(100/10000)^25

=1/100^25

=1/10^50

^= putere

/= fractie