Considere as seguintes afirmações sobre o conjunto U = {0,1,2,3,4,5,6,7,8,9}:
I) ∅ ∈ U e n(U) = 10.
II) ∅ ⊂ U e n(U) = 10.
III) 5 ∈ U e {5} ⊂ U.
IV) {0,1,2,5} ∩ {5} = 5.
Pode-se dizer, então, que é(são) verdadeira(s):
a) apenas I e III.
b) apenas II e IV.
c) apenas II e III.
d) apenas IV.
e) todas as afirmações.

Apair of ordinary dice is rolled. what is the probability that each die will show a number higher than 4. 1. (1/36) 2. (1/12) 3. (1/6) 4. (1/4) 5. (1/3)

Ican interpret and represent the remainder in division calculations sensibly for the context (eg if we wont to know how many 40 seat buses will be needed to transport 170 students for on excursion, we divide 170 by 40 and realise buses and another smaller vehicle to that we need 4 transport 10 more students) solve the following questions. show your work! 11) the zoo had 420 butterflies that needed to be transported to a new enclosure. the boxes that the butterflies would be moved in only hold 80 butterflies in each. how many boxes would they need? 2 12) each classroom in the school can have exactly 25 students, if there are 345 students in the school how many full classrooms are there?

The value, v, of kalani’s stock investments over a time period, x, can be determined using the equation v=750(0.80)^-x. what is the rate of increase or decrease associated with this account? 20% decrease 20% increase 25% decrease 25% increase