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Pavel [41]
3 years ago
6

Given A = {a, b, c}, how many subsets does A have including ∅? a. 4 b. 7 c. 8

Mathematics
1 answer:
djverab [1.8K]3 years ago
8 0
A set of n elements has 2^n subsets.

There are 3 elements in the set A, so the number of subsets is 2^3=8

You can write them out:
\{\{\}, \{a\}, \{b\}, \{c\}, \{a, b\}, \{a, c\}, \{b, c\}, \{a, b, c\}\}
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Serious inquiries only please and double check ur work please before posting
Darya [45]
To calculate mean: Just add up all the numbers, then divide by how many numbers there are.345 + 673 + 728 +775 + 822 +827 +839 + 951 = 5960/8 = 745
633 +  673 + 728 +775 + 822 +827 +839 + 951 = 6248/8 = 781781- 745 = 35 It increases by 35To find the Median, place the numbers in value order and find the middle. BUT, with an even amount of numbers things are slightly different.  In that case we find the middle pair of numbers, and then find the value that is half way between them. This is easily done by adding them together and dividing by two. 345 673 728 775 822 827 839 951 The median = 822-775 /2
The median =23.5After the change633 673 728 775 822 827 839 951   The median = 822-775 /2
The median =23.5The median stays the same.
3 0
3 years ago
Which fraction is closest to zero? 8/12 5/8 6/10 2/3
Triss [41]

Answer:

8/12

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which is the slope of the line that passes through the points (3,17)(3,17) and (7,25)(7,25)?
PilotLPTM [1.2K]
The slope is 2, because you subtract the points 3,17 from 7,25 to get 8/4/ Simplify that into 2. 
4 0
3 years ago
The mean number of goals scored is 2.5.
LenaWriter [7]

Answer:

2 games.

Step-by-step explanation:

2.5 + 1.8 = 4

4 divided by 2 = 2

5 0
3 years ago
Identify 11 as either rational or irrational, and approximate to the tenths place. a.Rational:/(11)~3.3
inysia [295]
I think your answer is c but I'm not sure 
8 0
3 years ago
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