Odpowiedź:
zad. 1
[tex]a)(3 \times {10}^{11} ) \times (2.4 \times {10}^{13} ) = 3 \times 2.4 \times {10}^{11} \times {10}^{13} = 7.2 \times {10}^{24} [/tex]
[tex]b)(4 \times {10}^{17}) \times (1.8 \times {10}^{24}) = 4 \times 1.8 \times {10}^{17} \times {10}^{24} = 7.2 \times {10}^{41} [/tex]
[tex]c)(5.2 \times {10}^{14}) \div (1.3 \times {10}^{6} ) = 4 \times {10}^{8} [/tex]
[tex]d)(4.8 \times {10}^{21} ) \div (1.2 \times {10}^{19} ) = 4 \times {10}^{2} [/tex]
zad. 2
a)
x=0,(37)=0, 373737...
100x=37,373737...
100x-x=37, 373737...-0, 373737
99x=37
[tex]x = \frac{37}{99} [/tex]
b)
x=0, (671) =0, 671671671...
1000x=671, 671671671...
1000x-x=671, 671671671...-0, 671671671...
999x=671
[tex]x = \frac{671}{999} [/tex]
