Question

me ajudem por favor ​é para amanhã

Answer 1

B

i)0,0000005 . 42000000

= 5,0 . 10^-8 . 4,2 . 10^7

= 21 . 10^-1

ii)0,000000006 : 0,00015

= 6,0 . 10^-10 : 1,5 . 10^5

= 4 . 10^-15

iii) 1300000000 . 50000000000

= 1,3 . 10^9 . 5,0 . 10^10

= 6,5 . 10^19

iv) 4500000 : 0,0009

= 4,5 . 10^6 : 9,0 . 10^-5

= 0,5 . 10^11

= 5,0 . 10^10

C

i) A Terra

ii) 149,6 . 10^6 - 1,089 . 10^11

1,496 . 10^8 - 1,089 . 10^11

= 0,407 . 10^3