The answer is 25%
(1)
If 64 is 100%, 48 is how much percent:
64 : 100% = 48 : x
x = 100% * 48 : 64
x = 75
(2)
Percent of decrease is:
100% - x = 100% - 75% = 25%
Commutative property of addition:
a + b = b + a
Associative property of addition:
a + (b + c) = (a + b) + c
Opposite of a sum:
- a - b = - (a + b)
If we look at the options, A and D follow associative property.
B follows commutative property.
C follows opposite of a sum property.
The best strategy is B.make a list
The hours cancel out and you divide 105.6 by 60 to get
1.76 L/min
Elyse has the option of combination of 960 cities, or another to choose from. If Elyse is going to buy an around-the-world plane ticket. She will get to see just one city from each continent she will visit.
<h3>Define permutation and combination.</h3>
Combination and permutation are two alternative strategies in mathematics to divide up a collection of components into subsets. The subset's components can be listed in any order when combined. The components of the subset are listed in a permutation in a certain order.
Given,
Elyse is going to buy an around-the-world plane ticket. She will get to see just one city from each continent she will visit. The following table below shows the continents on her trip and how many cities she can choose from for each continent.
To determine how many options Elyse will have, we use permutations and combinations.
We can say that she has a choice of any of the eight cities in Asia for every ten cities in Europe. Similar to how she can select any of the 4 cities in Africa for every 8 cities in Asia. The same is true for Australia and Africa.
Elyse has a choice of a total:
10×8×4×3
960
Elyse has the option of combination of 960 cities, or another.
To learn more about permutation and combination, visit:
brainly.com/question/12436970
#SPJ1
